Inverted Trimaran Hull form for Intermediate Speeds and Seas

This is a new form I've been working on based on the Cat hulls but with the third hull carried right down into the water. This gives me a form that in moderately choppy seas isn't slapping the hull in and out of the water, if you drop the throttle some. This also allows a really good deck loading aft, making it really handy for certain jobs such as light duty taxis and ferries. The third hull helps reduce the pitching moment common in short narrow-hulled cats. It is a much more expensive hull form than the big cats, which were designed to be really cost effective, and also much longer. This form is suitable for smaller vessels from 28 to 60 feet, perhaps longer in pleasure craft.

	42 Cruiser Hull






	36' Fire/Search and Rescue The local Fire Department has the responsibility for Search and Rescue in Buzzards Bay in cases where a medical emergency might exist. Buzzards Bay is well known around the World (in sailor circles anyway) as a small piece of water which due to orientation and depth can kick up quick and rough. This is the land of Moby Dick, and Joshua Slocum rebuilt the Spray not more than four blocks from my office before setting out alone around the World. This SAR tri-hull is stable and fast. The smaller services prefer outboards, they no longer maintain their own mechanics and an outboard can be swapped out in a few hours or less. This design can also take an inboard diesel jet drive, and can incorporate a third, smaller, motor amidships as a "get me home" or fuel saving cruise option. The Foredeck is laid out Pilot Boat style around the pedestal for the fire-monitor. This makes obvious sense where boarding at sea is the usual business. The Cabin contains four seats and a rack which can hold three occupied gurneys, or one gurney propped to seat three. There is a head in the port hull, pump and motor under the helmsman. The Aft deck has a tow-bitt and can take a two long ton load without significantly altering the trim. This allows for palletized loads or a literal ton of diver gear. With a small amount of dedicated dockside and a crane the vessel can carry oil boom or salvage pumps out the next time an oil barge springs a leak. All the way aft there is a diving ladder on each quarter, and the motors are protected by the usual arrangement of bumper bars and D-rubber.