80′ Long Range Expedition Motor Yacht
Reference Number: PMON080-0001
Design: 80' IMS racing yacht
Launch year: 1999
Total Berths: 8 Engine(s): 1 x 210hp Cummins 6BT 5.9l turbo charged diesel
Electronics include: VHF radio, compass, chart plotter, echo sounder, log, battery management system, 2 x Outback solar controllers for 6 X 240W + 3 X 200W solar panels giving a total of 2040 watts solar panels, 220v inverter, 110v inverter, and more.
Hull Material: Epoxy Resin, Carbon & Nomex fibres with a 1 1/4" Phenolic honeycomb core Deck Material: Epoxy sandwich
Owners Comments: There is absolutely nothing ordinary about ARCHARNE! A rugged and dependable motor yacht for short handed explorers, she has a comfortable interior and simplicity is her watchword. She runs on fumes and the concept of taking a well-respected ex-racing yacht and converting it to a serious ocean passage making motor yacht is not new. By reducing the yacht’s displacement by removing the sailing rig, modifying the keel, and installing a larger engine a extraordinary explorer motor yacht has been created.
Originally “Sagamore” was the first “new generation” IMS racing boat to be built by New England boat work utilizing phenolic honeycomb core (1-1/4″ thick) After ramping up the “oven temperature” for five hours, the 80-foot hull was carefully “cooked” in NEB’s post-curing enclosure for 12 hours at 80 degrees Centigrade (the IMS legal limit). With precise monitoring of the temperature, using an array of sensors implanted in the laminate, insured that a complete mechanical and chemical bond between the carbon and Nomex was achieved.
The conversion hull was chosen for its superb workmanship and its weight displacement. The hull was built flawlessly by New England Boat Works to a Bill Langen design. Constructed in all carbon and epoxy and nomex core, vacuumed and baked to exacting specifications. The original hull was chosen for its performance upwind, strength, long waterline and seaworthiness.
Based on her design and workmanship she made for a perfect hull for a light, long range power cruising boat. The structure was built for loads that far exceed the requirements for a power boat, so the strength was there, and the hull form would make for a very fast cruising speed with incredible economy.
The requirements for the long range expedition vessel were the following. These requirements MV Acharne met with ease
- A vessel with a fine entry for upwind condition and long waterline for speed. To do this the vessel must be light, with an upwind design configuration and Acharne, at 20 ton fully loaded compares to the weight of some 40′ sailboats.
- A vessel able to be operated ONLY by two people without any crew; requiring low, low maintenance on very simple mechanical systems which are easily accessible, simple and functional.
- The vessel must have the lowest carbon foot print and fuel-consumption possible for an ocean-going powerboat capable of long passages.
- An immense back deck, with comfortable outside accommodation, water access for diving. Easy dinghy retrieval and storage on deck, deck stowage to a good size tender and easy access to the dive compressor and dive gear.
- Green. We always install very large solar panel arrays, a zero diesel charging electrical system at anchor..
- Stability. A vessel which can sustain heavy weather with minimum challenge. This was achieved with low displacement, inherent stability from low deck and cabin weight plus inside and outside ballast. Keeping the boat light and low profile was a priority.
- Speed. Go against the weather comfortably at 8 to 10 knots and go downwind at 12 knots or more, “Acharne” surfs beautifully downwind. We have averaged 1 litre of diesel per Nautical mile at 1400rpm