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Van Diemen Luxury Craft specialise in the design and construction of exclusive tenders, creating personalised vessels with elegance, comfort, performance and versatility. Our patented convertible roof and window system is a signature feature which allows the vessel to adapt to all weather conditions. Using quality materials and world-class craftsmanship, vessels are designed to embody luxury and functionality. These innovative designs are set to transform luxury boating.

We are excited to be releasing the first of our newsletters featuring the latest happenings from Van Diemen. In this issue, we announce our most recent build news, followed by our Principal Designer, Andrew giving further insight into our latest vessel. Matthew, our Principal Technical Engineer, will give some insight into corrosion; something that affects all vessels in a marine environment.

We hope you enjoy our latest edition.

Our latest and greatest...

This month, we have been commissioned to build a bespoke 36 foot tender for an Australian client. Our Van Diemen designed tender, which is due for delivery in early 2016, will be built in collaboration with Steber International. It will featuring seating for twelve guests and two crew, an air conditioned cabin when in limousine mode, gyroscopic stabilisation and active ride control, touch screen digital switching and control and a twin V8 inboard v-drive arrangement to provide minimal cabin noise and vibration. Also featured will be a rear folding transom for ease of boarding, full amenities for patron comfort and Van Diemen’s patented roof and window system which allows the one tender to transform from a limousine to an open boat in under 30 seconds.

This tender will be the latest in our range of custom convertible limousine tenders, all of which feature our patented roof and window system. Vessels range between 18-40 foot with potential to develop larger designs if desired.

From Our Designer...

Our design philosophy is exemplified by elegant, practical and versatile solutions that transcend limitations, drive innovation and embrace opportunity.

This philosophy is evident in our signature convertible tender, the Sports Limousine, which is designed to minimise stowing height and maximise the tender size within a tender garage. It easily changes form, from limousine to open boat, to adapt to changing weather conditions. The epitome of innovation, its versatility creates three tenders in one.

The newly commissioned 36ft Sports Limousine was custom designed for the client, who required a completely unique and eye catching tender. The client chose the Sports Limousine because of its versatile form, which provides comfortable seating for 12 guests in an expansive saloon that can be completely open or enclosed. The hull shape of the tender was chosen to complement that of the yacht and features a deep V hull to ensure the most comfortable ride.

Tender Love n' Care...

Galvanic Corrosion and Tenders

The easiest way to explain the effects of Galvanic corrosion in your tender is to think back to your science class when you were building a battery out of two dissimilar metals submerged in a solution with a salt bridge, creating in essence, a battery. The same principle occurs with your tender, with sea water and dissimilar metals.

Galvanic corrosion will see the decay of one metal as it sends its ions to another metal through the sea water, resulting in the rapid decay of the metal that is lower in the pecking order of the galvanic table.

A prime location for this to take place is when berthed in a marina where there are alloy boats berthed near steel boats and in the near vicinity of steel piles or moorings. The combination of the sea water with the dissimilar metals is a prime environment for decay.

The issue with galvanic corrosion is not limited to the marina environment, there is also the issue of dissimilar metals within your own tender. It is highly likely that the tender is fitted with bronze or stainless propellers, or a stern drive that is bolted to the hull or even the jet drive. They all have dissimilar metals in some way, and are all immersed in seawater.

The use of sacrificial anodes are a great way to prevent galvanic corrosion. The material is usually zinc and is its job is to corrode first. When it is being sacrificed, the environment around that area becomes more passive and will not attack your other metals, so its imperative to keep a close eye on your hull anodes and any that are fitted in your propulsion system. Also ensure the anodes are clean and have good contact to the bracket they are fitted to.

If the tender is stowed on board, always rinse and flush the tender vessel with freshwater regularly. Even though the tender is no longer in the sea water, it still has sea water residue. Drain any accumulated water and allow the tender to dry out before fitting any covers, as the sweating of any moisture can be as damaging as the seawater. This will often find its way into areas that are more susceptible to corrosion.

With alloy vessels it is imperative to take pre-emptive steps to prevent corrosion. This starts from the build stage. It is important to isolate hardware and stainless-steel bolts from the aluminium with nylon washers. Ensure that hull compartments have drains with nylon plugs that can be opened to drain accumulated moisture. Don’t allow any crevices or joints to collect water or moisture (including condensation), it must drain away. It is also important to fit dedicated mounting brackets for the appropriate sized sacrificial anodes to the hull, and ensure the hull and extrusions are made from a thicker metal.

If you fit any components to your tender yourself, remember to isolate the hardware you are fitting with nylon washers and use an isolation paste on any fasteners like tef-gel.