LS 30

2010 January 4
Sport boat

This 30-foot sport boat was designed as a daysailer and club racer by Steve Dalzell, design program director of The Landing School in Maine. The Landing School trains yacht builders and designers. I have worked with them for many years accepting "interns" into my office so they could get some field experience. One intern, Tim Kernan, came back to work for me for five years. The Landing School turns out some good designers and it's always fun to have students around. This project was conceived to provide a design that the students could build to gain experience in modern construction techniques. To date the boat has proven a fast and effective PHRF racer and the school plans on building two a year.

The hull shows a V-ed forefoot with the deadrise forward fairing out by the time you get to Station 4. From there to the transom the bottom is very flat with a tight turn to the bilge at the stern. I see no hollow in the DWL at all forward. Beam is narrow at 7 feet, 6 inches, making for an L/B of 4.00. It's a very normal looking hull but I'd take the V off the forefoot and give it a nice bullet-shaped section at the bow. I'm not keen on "corners" on the hull forward. The keel is a T-type with a combination carbon fiber fin with a lead bulb for a total of 1,625 pounds of ballast. Draft is moderate for this type at just over 6 feet. The D/L is 116. The sheer is very flat with about 2.5-inches of spring.

I don't have any interior layout for this boat but there can't be much below anyway. I'd assume some flats for seats and maybe a V-berth with a porta potty, but with its narrow beam and low displacement there just isn't much interior volume in a boat like this. A 10-horsepower inboard auxiliary is shown on the drawings.

The rig shows a modern fat-head mainsail, double spreaders and 30 degrees of sweep with no standing backstay. The SA/D is 24.28. The boat was designed to be at its best in light to moderate air and has proven fast in those conditions. The short sprit is fixed and the chute is not masthead but high enough above the hounds to not have a problem jibing. The jib furler is located below the deck.

The deck plan is interesting in that there are low seatbacks in the cockpit extending aft to where the helmsman would sit. We usually see flat decks aft with seating on deck. Centerline foot bensons will help you stay up to weather when the boat heels. Jib sheeting tracks are on the cabintop. This allows them to share the halyard winches port and starboard of the companionway.

This boat is designed as a learning tool but I don't see any real compromises in the design intended to make building easier. Maybe you could argue that the inboard diesel is there to give the students experience in engine mounting and shaft alignment. The hull is wood composite and the decks are 3mm ply over Corecell foam or Nidacore. A group of five or six students will be assigned to build each boat.

I can't think of another program as thorough as the Landing School and this LS 30 project is evidence of that thorough approach. I wish them well with it.

LOA 30'; LOH 27'10"; LWL 25'; Beam 7'6"; Draft 6'; Displacement 4,073 lbs.; Ballast 1,625 lbs.; Sail area 386.5 sq. ft.; SA/D 24.28; D/L 116; L/B 4; Auxiliary Nanni 10-hp; Fuel 6.5 gals.

The Landing School, P.O. Box 1490, Kennebunkport, ME 04046, (207) 985-7976,

OBE: $95,000
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