At that time affordable 3-D modeling software was still being developed and Ted began working with a.

Most efficient catamaran hull design. A heavy displacement monohull might have a BN of7 whereas a modern cruising catamaran shows a BN of 13. Pentamaran Hull Design The pentaran is an exciting new design that works on the same principles as the catamaran. The driving power of any sail-driven craft is the energy of the wind acting through the Center of Effort CE of the sail plan.

Their cat designs resemble their single hull designs. This hull design is patented by Nigel Gee who is working with ADX Express a business consortium to bring the technology to fruition. Based on independent testing the SRD hull with a single engine or twin engines is the most fuel efficient powerboat on the market at speeds over 10 knots12 mph.

The BN will also tell us about a catamarans ability to withstand stronger winds before reefing. I have given this design the acronym SPEED standing for Small Power Extended Efficiency Displacement. The most important benefit of speed of a multihull is the ability to outrun bad weather.

Trends in Power Catamaran Boat Design. Solar Navigator has to be capable of cruising in all sea conditions. Using two hulls bridged by a deck the catamaran design provides additional beam increased stability and at the same time increased speed the slim twin hulls have little drag.

In fact Ted has achieved amongst the most efficient catamaran hull designs in the trawler market. Offshore multihull racers can have BNs of 20 and higher. The higher the number the slower the boat will sail.

The basic form is one of a fine entry bow and a flat box like stern section with 850mm maximum demi-hull beam giving a length to beam ratio of 12351 for our 11m hull. Prowler Semi-displacement Prowler VT Vapour Trail Growler Whisper The semi-displacement hull is a slim hull shape with a canoe-end underwater aft meaning this hull simply slides through. A catamarans Power to Weight ratio or Displacement Length DL Ratio is one of the most important efficiency indicators of a multihull.