At present we are building a Scarab 650 Sports Trimaran (Modified). This is a beautifully designed boat and reasonably easy to build from a construction point of view. The plans which are reasonably priced, are concise and easy to follow. No trimaran is that overall easy though, there is so much work to do if compared to say a 24ft Mono hull, more general construction and more technical systems on board such as folding mechanisms and the like. You have to be in for the long haul as building three hulls can become quite tedious. The boat has been built very sturdily below decks with each of the four arm supports being linked together, both in a box frame and diagonally. We are 13 months into this project and expect to be on the water in the next six. One more hull to go!! I have named the boat TriMantis.
We have modified the boat in a number of areas. Firstly, we have put a focus on bringing the look and technology of the boat, into 2020's. Main changes include, straightening the Bow to give the main hull a more upright and staunch wave piercing look from the front. We have reversed the bows on the port and starboard hulls and honed them to very fine angles for wave piercing. Buoyancy is also improved because we have added a water shedding, curved 3D printed deck along their entire length which incorporates a swim deck (usable deck space). The original decks were flat.
Another key difference in this boat is the use of 3D printing technology to create many of its parts, enhancing the boats ergonomics through to its aesthetics. All seating on the boat is edged with the 3D boat builder 100mm edging. These can be joined together over any length and follow any curves. Once in place they lock your bottom into the seat and dramatically reduce the risk of injury in an accident because they are designed modify any sharp edges. We have used these extensively both inside and outside the boat. They also look good. On the back of the boat we have installed two 3D printed, reducing tapered aero foils as legs for a targa or cross bar. We will mount solar and antenna systems up there. These legs are very strong when complete and the whole setup could also be used as a davit for a tender if required. All the hatch combing and the actual massive, curved hatch (1.2M x 1M) is also 3D printed and fiber glassed. Other 3D printed objects include all of the internal furniture, even the custom electrical cabinet and internal stairs. Note the edging on the seat rest back and the lower seat front in the main cabin.
Our goal with this boat was to make an ideal boat for a quick and exciting sail to Tangalooma Reef with overnight accommodation for two. We also wish to enter it in the Brisbane to Gladstone multi hull yacht race for fun.
Trimantis is an all-electric Trimaran and will be powered by a 3Hp electric motor with built in battery. By our calculations we should have about an eight-hour range at half throttle. A water capacity of 60ltrs (Deck Shower, nice and warm in QLD), 200Ah Lithium house Battery and Ray marine electronics also complement the boat. House battery is charged via a 100watt solar panel on the targa bar, Motor batteries can be charged via fold out solar panels. Its completed weight will be around 600kgs. It has over 40sqm of sail so I expect it to move right along........can't wait, better get back into it!!!
