Boat - Wikipedia

Bering Yachts prides itself on building robust, steel-hulled yachts with an emphasis on reliable, easy-to-access machinery. This mindset starts below decks and works its way throughout all ship systems. These ships, able to withstand the severe storms and icy conditions of the Baltic and North Seas, set the standard that Bering Yachts founder Alexei Mikhailov follows in Pdf Steel Yacht Hull Builders Hull Steel Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Builders Pdf Yacht Steel Hull Steel Hull Yacht Builders Pdf his mission of creating semi-custom heavy steel expedition vessels that provide safe and stable rides.

Bering Yachts subscribes to specific build principles to create what we feel is the most steel hull yacht builders pdf and reliable motor yacht possible. Our hull designs are based on those that have stood the test of time in the commercial marine industry.

Additionally, Steel Hull Yacht Builders Pdf Pdf Steel Yacht Hull Builders Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf the use of steel allows tremendous flexibility with the placement of interior bulkheads, thereby providing a great deal of customization with the floor steel hull yacht builders pdf. Bering Yachts are designed for extended voyages on the open ocean. When facing heavy seas, your Bering will provide both the safety and comfort you would hope for in such demanding Yacht Pdf Builders Steel Hull Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf conditions.

This is precisely why we selected steel as the material of choice. And steel provides the strongest ratio of benefits of all available shipbuilding materials: strength, durability, ease of design and customization, fire resistance, ease of maintenance and repair, abrasion resistance. These characteristics make steel suitable for serious offshore vessels.

Bering 77 under construction. From breaking ice to withstanding Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf groundings on rocky shoals and reefs, steel ships have a longstanding history of taking severe punishment of the worst kind, and despite the abuse, retaining both hull and watertight integrity.

Bering hulls are steel hull yacht builders pdf impact resistant. Steel by its very nature steel hull yacht builders pdf also puncture resistant, hence its use in safes and vaults. These Steel Hull Yacht Builders Pdf hull properties, together with appropriately-engineered hull plates, which are then reinforced by internal structural members, cross bracing and bulkheads, raise the likelihood of impact survival; be it a rogue floating shipping container or a log, the threat of damage to the hull integrity is decreased.

There are countless examples of steel-hulled vessels running aground on a rocky shore and suffering only minor damage with the integrity of the hull remaining intact. Given the diversity of cruising grounds and the fact that you simply cannot avoid every coral head or unmarked shoal, having a strong, abrasion-resistant hull provides valuable peace of mind.

Steel does not burn. Many of the materials aboard Bering Yachts, such as coated wooden bulkheads, carpeting, curtains Steel Hull Yacht Builders Pdf and cabinetry, are either nonflammable or flame resistant.

The insulating foam that occupies the space between the hull and living quarters does not support combustion. The marine-ply bulkheads are highly flame resistant. The total flammable mass aboard is actually quite small, therefore much easier and quicker to extinguish should a fire occur. Bering also ensures that each cabin and the Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf engine room and machinery spaces are equipped with temperature alarms and smoke detectors.

Steel offers several key benefits when considering repairability. Given that it is one of the most common raw materials in industrialized and even semi-industrialized nations, access to those who understand its repair techniques is widespread A welder possessing even modest welding skills can provide a reliable patch Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf to get you back on your way.

Having a steel vessel simply increases the likelihood that should a simple repair be needed, it will not turn into a time consuming and costly headache in an otherwise beautiful cruising locale. Bering 65 hull 3 under construction. A steel vessel is built from the keel up according to design plans that steel Steel Hull Yacht Builders Pdf hull yacht builders pdf for near infinite flexibility in the interior layout.

Unlike other build materials, steel hull yacht builders pdf yachts achieve their requisite rigidity and strength throughout the hull and its carefully placed load-bearing longitudinal stringers and cross members, as well as the hull-to-deck joint.

This allows for bulkheads and floor plan considerations to be modified virtually at Steel Hull Yacht Builders Pdf Hull Builders Pdf Steel Yacht Steel Hull Yacht Builders Pdf will without concern for adversely affecting the overall integrity of the vessel structure. Requiring tremendous skill and experience, both to properly engineer and design and then to physically fabricate each vessel, Bering employs highly educated draftsmen and experienced shipwrights who have honed their skills successfully building commercial ships of all sizes.

Bering 70 under construction. Recognizing the Steel Expedition Yacht Builders 12 need for ultimate Steel Hull Yacht Builders Pdf Yacht Builders Hull Steel Pdf reliability and functionality, Bering uses rugged commercial-grade equipment and fittings aboard its yachts. Internationally sourced continuous duty pumps and motors are found in the plumbing and electrical systems. Cummins Marine diesel engines are typically installed due to their longstanding track record for dependability and performance, as well as their unequaled international service network.

And, in keeping with our belief in Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf redundancy, Berings are equipped with twice the needed life-raft capacity included in the specifications. Detailed stability calculations are carried out for each Bering and provided with each vessel. Bering vessels can also be built to comply with most classification standards, where applicable, upon request.

When we decided to build our first motor yacht, we chose as our prototype a foot Steel Yacht Hull Pdf Builders Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Norwegian fishing trawler design. Vessels of this type have been used aggressively for decades and have proven themselves to be safe and efficient fishing platforms. We left the hull form untouched and developed a superstructure and interior that enhances accommodations for long-term living aboard and cruising.

The result of this collaboration is a bold, seaworthy passagemaker that not only meets stringent commercial safety standards but provides a pleasant and reassuring underway experience in any sea state. While designers use exotic materials and novel design concepts to seek the perfect hull form that will somehow finally conquer the challenges of Mother Nature, the fact remains that hydrodynamics steel hull yacht builders pdf not change.

Decades of real-world experience shows that steel Hull Pdf Yacht Builders Steel Steel Hull Yacht Builders Pdf Pdf Hull Builders Yacht Steel Steel Hull Yacht Builders Pdf hull yacht builders pdf heavy, full displacement vessel with carefully designed centers of buoyancy and low centers of gravity will provide a truly comfortable, stable and safe passagemaking experience.

Bering trawlers are heavy, full displacement vessels designed with a hard-chined hull; this is the most common hull form in commercial fleets. This type of hull shape, unlike those with rounded Steel Hull Yacht Builders Pdf chines, helps minimize roll and increases the stability of the vessel at rest and while underway.

We are proud to say that our boats are heavy. Marketing by current builders may have you believe weight is an enemy to a properly designed boat. Once again, it all comes down to what you are designing for; if the design criteria calls Pdf Steel Builders Yacht Hull for planing speeds and trailerability, then yes, lighter is better.

But when we are speaking of vessels that will go to sea for extended periods, thus being exposed to potentially dangerous and uncomfortable sea conditions, weight quickly becomes your ally. Among other benefits, steel hull yacht builders pdf properly balanced, heavy, steel hull yacht builders pdf displacement boat will possess Pdf Builders Hull Steel Yacht a slower roll moment. A vessel that rights itself too quickly is one of, if not the leading cause, of seasickness.

The contents of tanks splash harder, unnecessarily stressing the walls and lids. Heavy machinery and equipment such as engines and battery banks generate large amounts of inertia with a snap roll moment, as well as imparting additional loads on Hull Steel Builders Yacht Pdf Steel Hull Yacht Builders Pdf running and steering gear, all steel hull yacht builders pdf which leads to excessive wear and premature failure.

A smooth ride is paramount in helping ensure both crew and ship arrive safe and sound at their destination, and a heavy boat, with or without stabilization, will afford a level of passive stability that no light-for-displacement vessel can provide. Bulbous bows Yacht Hull Steel Builders Pdf help to reduce pitching in heavy seas, and in conjunction with the forward watertight bulkhead, create a collision compartment that provides an added level of safety.

The purpose behind this design is not only to draw the bow wave lower at the waterline, but to minimize the pressure coefficient along the side of the bulb. Furthermore, the bulb is ballasted Hull Builders Steel Pdf Yacht Steel Hull Yacht Builders Pdf to reduce pitching steel hull yacht builders pdf heavy seas; another benefit is that it serves as a collision compartment in the event the vessel collides with a floating or submerged object.

Two massive gondola skegs act as passive stabilizers, reducing roll, increasing course stability, and protecting the propellers and rudders. The shafts and propellers are housed within skegs that Steel Builders Hull Yacht Pdf Steel Hull Yacht Builders Pdf Pdf Builders Hull Steel Yacht Yacht Builders Pdf Steel Hull Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf provide increased directional stability and will improve course keeping should it be necessary to run on one engine. You can take comfort while at the helm or anywhere aboard a Bering, knowing that all our yacht hulls are divided by five watertight bulkheads creating six independent compartments.

Also, Bering designs all tanks to be integral, meaning they actually double the Steel Hull Yacht Builders Pdf sides of the hull. The lids of the tanks are heavy steel plates that have been welded to the hull sides to form a completely liquid-tight structure. In addition to maximizing otherwise unused space, and providing the lowest center of gravity possible, integral tanks provide a very significant safety advantage.

Essentially, a Bering trawler has a double hull, meaning that should Steel Hull Yacht Builders Pdf the hull itself somehow be penetrated below waterline, the tank would maintain the watertight integrity of the ship.

This is an extraordinary feature not found on most recreational cruising yachts. The result is better passive stabilization by presenting the buoyancy of a hard chine to resist lateral rolling motions but still maintaining the dampening characteristics of a round bilge hull. This can be most effective at anchor or in a beam sea. For every new yacht built, Bering carries out extensive hydrodynamic hull 3D modeling and calculations to perfect the hull design and reduce fuel consumption.

Our hull design allows for greater fuel capacity. With many expedition-style yachts, comfort and accommodations take a back seat to purpose or utility, resulting Yacht Steel Builders Hull Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Yacht Steel Builders Hull Pdf in minimal storage capacity. Bering Yachts are designed to have more range, be more fuel-efficient, and provide more space for live-aboard cruising.

Controlling noise and vibration on a long-distance passagemaker is extremely important as the crew will be steel hull yacht builders pdf to ambient noise while underway for long periods of time. Bering goes to great lengths to ensure Yacht Steel Hull Pdf Builders Steel Hull Yacht Pdf Builders that its vessels are steel hull yacht builders pdf by using cutting-edge insulation technology for suppressing the high frequency noise. Bering steel hull yacht builders pdf are built with Seatorque shafts, one of the most quiet steel hull yacht builders pdf most vibration-free running gear systems steel hull yacht builders pdf. As you can see in the spreadsheet below, the decibel reading in the pilothouse of a Bering 65 is 48 dB while running at rpm and traveling at 8 knots, while the engine room is 91 dB.

Construction of a new passagemaking trawler yacht allows the owner to make informed choices and to select the gear, equipment and layout that is most suitable for their application. Bering Yachts is extremely flexible in working with clients to specify every aspect of the build. Savvy buyers create comparison spread sheets to look at competing models side by. We encourage you to do this and are confident that every Bering we offer will meet or exceed the detailed analysis you develop to create your ultimate passage making vessel.

Production fiberglass models Builders Pdf Hull Steel Yacht are limited in construction to what works within the limitations of their molds, a custom steel Bering has virtually unlimited possibilities and everything can be reviewed through our 3D modeling before the first piece of steel hull yacht builders pdf is cut.

If you are looking to build the ultimate cruising vessel, you owe it to yourself to connect with Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Bering Yachts, and to learn how we can build you the boat you desire, at an attractive price with outstanding performance and reliability.

Construction Approach Bering Yachts prides itself on building robust, steel-hulled yachts with an emphasis on reliable, easy-to-access machinery. Flammability Steel does not burn. Repairability Steel offers several key benefits when considering repairability.

The decision to commission a new Bering offers you an incredible amount of choices Steel hull yacht builders pdf of a new passagemaking trawler yacht allows the owner to make informed choices and to select the steel hull yacht builders pdf, equipment and layout that is most suitable for their application.

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Collectively you get wish from taking flight the personal gardens. (AP PhotographAbbas Dulleh) steel hull yacht builders pdf BE AWARE:A carpenter you talked to done upon swap idea for a crossbeams: He felt which 2-by-4s could be notched so as to fit around a chines rather than only in antithesis to steel hull yacht builders pdf.

Angle grinders are noisy, dusty, slow, and curves are difficult to cut with them. Plasma cutting is very clean, but difficult to Steel Hull Yacht Builders Pdf Hull Steel Pdf Builders Yacht Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf use and not very versatile. Oxy-propane is very similar to oxy-acetylene, but you can't use an A. The finest all round method that I have found is Oxy-acetylene. It is very versatile.

During your project you will use it to cut plate of all thicknesses, making both straight and curved cuts easily.

It is quiet and fairly clean, only needing a small amount of cleaning after with an angle grinder. It will also be used to heat and bend bars etc. The oxy-acetylene bottles can normally be hired from a local supplier. Have the largest you can as this saves time waiting when you run out and is usually cheaper in the long run.

Buy a pair of gauges, Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf some long hoses, 30 foot hoses saves moving the bottles around and a cutting torch. Three or four 'pepper pot' type burners spanning the range will be adequate, and an A.

It is stated that an A. These 'step' nozzles work by actually sitting on the plate, which makes using them easy. The edge of the plate is heated red Steel Hull Yacht Builders Pdf hot, then the oxygen trigger is pressed which starts the burning process and the torch is pulled slowly towards you making the cut. I always use a guide made from a piece of flat bar, 6mm by 50mm by mm long, with an old screwdriver welded on as a handle.

This is held next to the line to be cut and the nozzle ran along it. Can I gas weld the steel? Often people enquire if a yacht can be gas welded, to which the answer is no. This puts too much heat into the steel and would cause massive distortion and so can not be considered. How should I weld it?

There are two methods which are Mig or Steel Hull Yacht Builders Pdf Stick welding. Mig has the advantage of causing slightly less distortion and being easier to use. But is more expensive, carrying the wire feed unit around is difficult, and it can not be used in a draught as the gas is blown away. This means that it can not really be used outside. Stick welding takes slightly more skill, but is less expensive.

It is not so critical of conditions so it can be used outside, and with a long cable it is easy to reach all around and inside the yacht. A amp welder will be fine for all the welding except the heavy plate around the keel. The high amperage needed in this area will cause the welder Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf to overheat and cut out after only a few inches of weld. It may be cost effective to hire a larger welding plant to tackle these areas. Can the hull be used as the negative conductor, like a car?

Absolutely not!! Keeping the electrics out of the hull is a must, don't use the hull as the negative, the Pdf Steel Builders Yacht Hull Steel Hull Yacht Builders Pdf way it is done on a car. This causes massive electrolytic problems. Also while talking of electrolysis you may want to use the modern plastic ball type sea-cocks, rather than the traditional bronze.

This also helps keep galvanic corrosion down. A tip from an electronic engineer friend is, if you have a volt supply, fit electronic circuit breakers, but don'Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf t earth the hull. This is because if there is a fault in the marina your hull may provide an earth for a large part of the marina, with the resulting electrolysis.

Can I build a round bilge yacht? Amateur construction of steel hulls is generally limited Best Expedition Yacht Builders Quality to either a hull with chines, or the radius chine method. The simplest, Steel Hull Yacht Builders Pdf and quickest is a design with one hard chine, although these tend to be less ascetically pleasing than any other type.

The difficulty of construction increases with the number of chines, the only exception is around the bow, where a greater number of chines spreads the heavy compound curvature often found in this area. Radius chine is a reasonable proposition Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf for home construction. With this method enough plates to form the chine on both sides are all rolled to the required radius. Differing widths are cut from this pre-rolled plate and used along the length of the yacht to form the chine.

This sometimes needs a little cutting and fairing amidships to make it lie correctly. The rest of the Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Pdf Steel Yacht Hull Builders hull is built from flat plate, but due to the rounded chine has the appearance of being round bilge. The only method that I have seen of producing a true round bilge yacht without rolling the plate, is to diagonally plate from keel to toe rail with narrow plates. This is a rather difficult method of construction, which usually needs much Hull Builders Yacht Pdf Steel work to achieve a fair hull.

One professional constructor in the UK produced very expensive high class yachts using this method but to achieve a fair hull a team of plasterers would cover the hull with filler prior to fairing it by sanding.

Currently there are some designs being promoted for this type of construction and plans are being sold Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Builders Pdf Hull Yacht Steel Hull Yacht Builders Pdf to amateur constructors. To date I have no knowledge of how successful these have been and time will tell how people fare with them. An Article by Paul Fay. The yacht had performed really well, they had sailed ten thousand miles in the last year with no problems and now that they were back on their half tide mooring on Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf the West Coast, the owner was catching up on some maintenance.

While walking around at low tide having a look at the underwater areas, he suddenly noticed with alarm that the anodes were disappearing very quickly. This needed immediate investigation, as the yacht is 37 feet, built of steel and normally only needed the anodes replacing every four to five Yacht Pdf Steel Hull Builders years.

The way they had suddenly started wasting away showed that something had gone dramatically wrong. This was not an isolated incident or one that only happens to metal boats. In another case the yard that had hauled a new fiberglass yacht out of the water, found that the alloy sail drive leg was corroded away. The only thing keeping Steel Yacht Builders Hull Pdf Pdf Hull Yacht Steel Builders Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf the water out was the internal rubber gaiter. A new sail drive leg that came with a new anode was fitted but three days after going back into the water the anode had corroded so badly that there were holes appearing large enough to insert a finger.

Horror stories like this are all too common and with our increasing reliance on electronics are being reported more and more. These stories are all made worse by the almost mystical way that many people view galvanic and electrolytic corrosion. The marine industry has also compounded the situation because most marine engineers, both mechanical and electrical, were never taught the simple and easily understood theory behind the subject while they were being trained.Builders Pdf Yacht Steel Hull Builders Steel Hull Yacht Pdf Steel Hull Yacht Builders Pdf Steel Pdf Hull Yacht Builders Steel Hull Yacht Builders Pdf

When called upon to solve a corrosion problem they start casting around for all sorts of complicated solutions, often making the problem worse and costing the owner a small fortune. Remembering our days at school and what we learnt in the science classes will remind us that if we hang two different metals in an electrolyte liquid and connect them Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Yacht Builders Pdf Steel Hull Pdf Builders Steel Hull Yacht then electricity will flow. This is a simple battery. One piece of metal will be corroded; the other will be virtually unaffected.

This is galvanic corrosion. Another form of corrosion happens when two pieces of metal are in an electrolyte and are then connected to an electrical supply. This can be either a battery or a mains supply. The metals Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf can be different or the same. The corrosion is dependent on the current we are applying and the direction that we apply it. This is electrolytic corrosion. There are several rules here that must be fulfilled for corrosion to happen.

To produce galvanic corrosion the metals must be different. The further apart in the galvanic series of metals then the higher the current that will flow and the faster the wasting away of the anodic metal. Second, the metals must be in an electrolyte. At school we would have tried various conducting liquids and found that they each gave different results.

The one that we are interested in is salt water, which is a good electrolyte. This electrical connection can Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf be made either by touching or by some other conducting path, such as a wire or the damp interior of a yacht. This therefore means that if we can isolate the different metals that we use below the waterline then we have broken the circuit.

We have stopped the flow of electricity and therefore stopped the corroding or wasting away Steel Hull Yacht Builders Pdf Yacht Hull Builders Steel Pdf of the metal. In practice, there are certain places where it is virtually impossible to isolate the metals. For instance, we normally use stainless propeller shafts with bronze propellers; also very often mild steel rudders have stainless pins welded on as the bearing surfaces. When this is the case the two metals are chosen to be Yacht Builders Ranking 100 as close as possible Steel Hull Yacht Builders Pdf in the galvanic series so that the corrosion is minimal.

The circuit in both of these instances is through the two metals that are touching, through the water and back into the metal. To reduce the small amount of galvanic damage that will inevitably happen, even though the metals are close in the galvanic scale, a sacrificial anode is fitted. A Hull Yacht Pdf Steel BuilderPdf Steel Yacht Hull Builders s sacrificial anode is a piece of metal that is low in the galvanic series and is attached to the part that needs protecting.

Another place where it can be difficult to isolate the metals is in timber boats. Here the circuit is from a skin fitting, through the water to another skin fitting, then through the damp timber of Builders Steel Yacht Hull Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf the hull back to the first skin fitting. It is common practice to connect many or all of the fittings together on wooden boats by joining them internally with copper wire. The copper wire is connected through the hull to a series of anodes that protect the fittings.

These anodes need replacing at regular intervals. The only problem with this Steel Hull Yacht Yacht Builders Brisbane 4g Builders Pdf Yacht Steel Pdf Hull Builders Steel Hull Yacht Builders Pdf procedure on some wooden boats is that around the fittings being protected an alkali will be formed. Some timbers will be quickly damaged by this and expert advice should be taken when proposing to fit a new anode system to a wooden boat.

On early GRP hulls, the skin fittings were often joined in the same way as on wooden Steel Hull Yacht Builders Pdf boats, but it is now more usual to leave the fittings isolated. This uses the insulating properties of the plastic hull to ensure that no circuit is formed, but care is needed to make sure that the fittings are not continually wet by the bilge water, as this would form an internal connection.

On many modern GRP hulls, the only Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf anode that needs fitting is to the propeller shaft, as all other fittings are well insulated from each other and so no circuits are formed. On metal hulls, various methods are employed to minimize galvanic problems. There are now available excellent plastic sea cocks that can be fitted. These will totally cure the problem, as they are electrically inert. If bronze fittings are used then they must be electrically insulated from the metal of the hull.

This is achieved with plastic washers, gaskets and sleeves to form a barrier between the bronze and the hull, so that no circuit is formed. Welding in the stern tube and then using a resin cased stern tube bearing; a rubber mounted packing gland Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf and a plastic coupling between the gearbox and the shaft, will insulate the propeller and shaft from the hull. Shaft bearings are available with either bronze or resin outer cases. Only a resin case should be used where ti will be in contact with the metal hull.

These are just a few of the many ways that under-water circuits leading Steel Hull Yacht Builders Pdf Yacht Steel Pdf Hull Builders Steel Hull Yacht Builders Pdf Yacht Pdf Steel Builders Hull to corrosion can be avoided. With the boat out of the water, the resistance between fittings can be checked with a cheap multimeter, or even a simple battery, wire and a bulb. This should show that there is no contact between the fittings.

A commonly made mistake is to connect the meter between two fittings when the boat is afloat, Steel Hull Yacht Builders Pdf to see if current is flowing. What actually happens is that the meter instantly makes a circuit. This produces an alarmingly high current reading, leading the operator to believe that there is a problem when in fact there may be none.

The alternative method to the galvanic corrosion that has just been discussed is to cause corrosion by introducing current Steel Hull Yacht Builders Pdf to the fittings. On ships, this is often deliberately carried out by supplying controlled current to special anodes.

This is so that the vessel's engineers are in direct control of the electrolysis. This is known as an impressed current anode system. In the case of small boats and yachts, induced current normally happens by accident.

It is fortunate for Steel Hull Yacht Builders Pdf us boat owners that most corrosion problems are galvanic as when electrolytic corrosion happens it can be difficult to trace the circuit. Although this is only slight it is all that is needed to cause electrolytic corrosion. It is a fact that the negative on many boats is connected to the water without the owner being aware of it, making Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf it easy for any stray current to form a circuit.

This can be through the engine block, through control cables, and commonly via the outer braid or ground on VHF and SW radios and other radio receivers such as weather faxes. An often missed, but common way for the circuit to be made is this: - The chassis of radio receivers Steel Hull Yacht Builders Pdf Builders Hull Pdf Steel Yacht is connected to the negative of the battery. The outer braid of the co-ax cable from your VHF is also connected to the chassis.

The other end of the co-ax is connected to the antenna bracket, which is connected to an alloy mast. By keeping as many trades as possible in-house, Christensen can maintain it's high finish standards as Steel Hull Yacht Builders Pdf well as control it's production process. Using computer-driven CNC machines, Christensen can very quickly build custom components for its boats, including such built in features as exterior settees, bars, cabinets, hot tub surrounds, and Bimini tops.

While other yards outsource trades such as cabinetry, painting, piping and electrical installation, Christensen is proud to offer all of the skills and Steel Hull Yacht Builders Pdf Yacht Pdf Hull Steel Builders Steel Hull Yacht Builders Pdf trades necessary to build a world-class yacht under one roof. Christensen has two 50M yachts now under construction and available for purchase.

Christensen also offers the immediate availability to begin an additional hull. The yard consists of , square feet of climate-controlled manufacturing space and a seven-acre marina. A dozen large shipbuilding bays located directly across from all major craft shops Hull Builders Steel Pdf Yacht Builders Steel Hull Yacht Pdf Steel Hull Yacht Builders Pdf allowing the companies workforce to build with extremely high levels of efficiency.

Christensen's facility houses each supporting craft and trade including state-of-the-art stone shop and a world-class upholstery and finish studio. Christensen's existing shipyard allows it to build world-class yachts up to 50 meters feet in length. Nestled in beautiful eastern Tennessee, Christensen's future shipyard located in Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Pdf Yacht Hull Builders Steel Steel Hull Yacht Builders Pdf Tellico Lake, Tennessee, will consist of acres with , square feet of climate-controlled manufacturing space and will offer 13 large manufacturing and assembly bays.

This much larger yard will allow the Christensen's portfolio to expand to include yachts up to ft, while still manufacturing yachts up to 50M at the Vancouver, Washington facility.

This new yard will maximize Christensen's Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Builders Pdf Hull Steel Yacht strong stance in the global yacht market by allowing both an east coast and west coast presence for the world renowned brand. Right Jim Gilbert on behalf of Don Burns. Please attach your resume and any supporting documents by clicking the "choose file" button below. If uploading multiple files, hold Ctrl or Cmd key while selecting files from your computer. The Pdf Yacht Hull Builders StSteel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf eel Christensen Difference.

Yachts Under Construction Christensen has two 50M yachts now under construction and available for purchase. Hull 38 - Scheduled Launch Hull 38 Specifications PDF. Hull 42 - Projected Launch The point is, many alternatives can be used to build an aluminum boat with largely the same results in terms of strength, durability, etc. In the above and Pdf Yacht Steel Builders Hull referring to Fig. First, the extra strength that a shaped member would provide in the steel boat is simply redundant in the size boats discussed; it would just add weight, cost, and complexity.

Second, shaped members add to the difficulties of inspection, maintenance, and corrosion protection in the steel boat; for example, the ability to see and coat the underside Steel Hull Yacht Builders Pdf flanges is difficult, especially when such members are small. However, in the aluminum boat in Fig.

But there are several reasons for using shaped members, especially for longitudinal stiffeners. First, such members are stronger. Or put another way, you could have the same strength in a lower-profiled shape than with flat bar. And the added strength in the aluminum boat Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf is a plus.

Another benefit might be more usable interior volume. They tend not to be so floppy, and bend more uniformly than flat bar.

The downside is that extrusions cost more than flat bar or the sheet stock one can use to make flat bars, and may not be readily available at least in the size you want. If Yacht Pdf Steel Builders Hull Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf working from stock plans for an aluminum boat, the designer probably specified certain sizes, types, and alloys of members for framing, etc. But deviations may be possible. Most designs have some latitude in alternates that can be substituted. Channels can be made from split square or rectangular tubing, or even split pipe if somewhat larger than the specified channel.

You Builders Hull Yacht Pdf Steel could even fabricate your own sectional shapes from built-up flat bar. Then too, if members are not available in one size, perhaps one the next size up will suffice. However, you should always consider the consequences of added weight that such a change might make. Conversely, it is probably better to avoid downsizing to a smaller member as the opposite Steel Hull Yacht Builders Pdf alternative. To the novice, there is a bewildering array of aluminum alloys available.

But for the welded aluminum boat, the choices narrow down to the so-called marine alloys in the and series, the latter typically being extrusions. Yet even within these series there are still many alternatives. But the most common, readily available, and suitable for welded boat hulls include: Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf H32 H34 H H32 H H However, the designer may have already taken this into consideration if is specified. Corrosion resistance for the alloys listed above is excellent in all cases.

The material has good corrosion resistance also and is commonly used for extruded shapes. Early aluminum boats were often made with closely-spaced transverse frames with few, if any, longitudinals, Yacht Builders Steel Pdf Hull a carry-over from traditional wood boatbuilding no doubt. However, the amount of welding required and the ultimate heat build-up caused considerable distortion and weakening of the skin.

The more enlightened approach used today emphasizes longitudinal stiffeners fairly closely spaced with these crossing more-widely spaced transverse frames only as required to maintain hull shape.

In fact, some smaller welded aluminum boats Steel Hull Yacht Builders Pdf may need few if any frames at all, especially where bulkheads may serve double duty. The preferable approach is for transverse frames not to make contact with the shell plating other than perhaps at limited areas along the chine or keel.

About the only case where a transverse bulkhead needs to make continuous plating contact is if it is intended Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf to be watertight. Even then, such a practice tends to distort the plating and is often readily visible on the outside of the boat. In short, general practice is to NOT weld plating to transverse frames or bulkheads even if such members touch or come near the plating.

The chine is the junction between the bottom and side on a Builders Pdf Yacht Hull Steel Steel Hull Yacht Builders Pdf Steel Yacht Pdf Hull Builders v-bottom or flat bottom boat. On high-speed planing boats, this corner should be as crisp are possible, especially in the aft half of the hull. The reason is that water should break free from the hull to reduce frictional drag at speed, and not climb up the topsides.

As shown before, Fig. Otherwise, a backing member is largely optional. If Steel Hull Yacht Builders Pdf a special extrusion as discussed before is available, these are acceptable. Side and bottom plating fit into the slots which are then welded continuously.

From an appearance standpoint, a continuous inside weld looks best. However, such extrusions are often proprietary items or otherwise prohibitive in cost, and a problem to buy and ship in small quantities.

Completing the ends of such extrusions where they join to transom and stem areas is also not always easy for the builder making a single boat. However, if the protruding flange is too pronounced, there may be a tendency to hang up on rocks in certain boats such as whitewater boats, or snag debris and catch pilings in other types of boats depending on their use.

Otherwise, round bar bends around frames easily and gives a well-defined boundary to work to when fitting side and bottom plates. A temporary chine backing member may help in this regard.

In this case the bottom is fitted first and cut with care along the chine line a temporary backing member may aid in fitting. Then topsides are Builders Pdf Hull Steel Yacht Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf installed, letting the edge overhang the junction a distance as required to form the spray deflector flat. While a good design, this configuration also takes care to assure fair lines. As mentioned, on the modern aluminum hull, most plating is reinforced by longitudinals.

While a good set of plans will specify what to use for these members, this does not Steel Hull Yacht Builders Pdf necessarily rule out another alternative if what is specified is not available.

These are available in many sizes, often in the form of extrusions with radiused edges that facilitate welding, or you can cut your own from plate. Other stiffeners are often extruded shapes that can get costly and may not be as readily available in the sizes needed.

When Steel Hull Yacht Pdf Builders Steel Hull Yacht Builders Pdf installing longitudinals, bending can present problems depending on curvature and member type. One approach some builders take to reduce bending effort is to gore members along their flanges as in Fig.

This idea is sound, but the execution takes care to assure fair curves. Good practice also calls for radiusing the corners at the gores slightly to minimize hard spots Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf Steel Hull Yacht Builders Pdf against the plating. Avoid over-welding, and completely around the ends of each cut. This allows a strong fillet weld on both sides of the junction the inside weld can be intermittent. A simple corner junction here as in Fig.

In fact, some builders extend the bottom plating considerably past the transom on faster planing hulls to form integral non-adjustable trim tabs.

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