A 28' 3" Double-Ended Knockabout
By William Atkin
A Fast Double-Ender
Inga is a wholesome double-end auxiliary designed for the perfect comfort of two on long or short voyages. She is just the right size for a shorthanded crew, being simple in rig, straightforward on deck, handy as a gimlet, fast and comfortable. And, Shipmates, not too expensive to build. And she will sail on her bottom, not her topsides; this latter is an item of importance sometimes overlooked in the quest for speed and extraordinary windward ability, a couple of wistful characteristics that do not always materialize, more's the pity. Not as big as Eric and Somewhat larger then Eric, Jr., Inga adds another useful unit to MoToR BoatinG's ever expanding family of practical and proven boats.

The latest is 28 feet 3 inches in over all length; 25 feet on the water line; 8 feet 6 inches breadth; and 3 feet 6 inches draft. This may sound like too little draft for a boat of this length; it is not. Several double-enders of very similar dimensions to Inga have been built and are most satisfactory in every way, especially in the manner they have of getting to windward, therefore prospective builders can be sure there is nothing of an experimental nature about the shallow draft, or the other features of the design. The freeboard at the bow is 3 feet 10 inches, the least freeboard 2 feet 6 inches, and the freeboard at the stern 2 feet 10 1/2 inches. The hull has a displacement of 12,200 pounds so you can easily see where the room below comes from. The outside lead weighs 5,700 pounds, inside ballast 600 pounds.

Sail area is 381.9 square feet divided into main, 293.4 square feet, and staysail, 88.5 square feet. Staysail is not of overlapping design, rather has proper boom which simplifies sailing the boat eliminating the everlasting, shifting of staysail sheets every time tacks are changed. The boat is simply rigged with a minimum of standing and running rigging. There are only two shrouds each side and the main shrouds lead to the mast at a considerable distance below the mast head. Also there is no permanent back stay. The latter are badly overrated for wholesome cruising craft, if not downright dangerous. Single headstay, mast headstay, and runners complete the standing rigging.

The deck plan shows a cockpit 3 feet 11 inches long having seats each side. The floor is well above the load water line. There is a bridge deck 20 inches long, and a coaminged hatch in the after deck. The main deck house is 8 feet 1 inch long by 5 feet 4 inches wide. Decks in the waist are about 17 inches wide and ample.

The cabin is laid out for the comfort of two. Headroom under the companion slide is 5 feet 11 inches and under the house top beams 5 feet 5 inches, which is not bad for a small boat with a low cabin house. Coupled with the generous head room we have a wide floor, flat across to a width of 28 inches excepting at the extreme after end which is beneath the bridge deck anyway. There is a full length built in berth up under the forward deck and this is 24 inches wide with ample room above to clear one's shoulders while sleeping or turning over. A bin is under the berth for stowage and there is locker space beneath the seat on the starboard side of the forecastle. A pump water closet is tucked in behind the bulkhead at the forward end of main cabin where it is exposed and easy to get at to clean and to shut off sea cocks while the boat is not in use. There is a hanging locker opposite the water closet which will come in handy for odds and ends. The main cabin contains two full length built in berths with lockers or drawers beneath and behind these under the side decks a row of lockers which should be fitted with hinged doors and catches that will not spring open when Inga is heeled down in rough water. There is a good ice box and hanging locker along the port side of the cabin and all the galley things, Shipmate range, sink, dish lockers, and coal bin on the opposite hand. Narrow ladder leads to the bridge deck. The motor, a small four cylinder Red Wing Meteor, is installed under the cockpit floor and bridge deck. The motor sits perfectly level which is good engineering, I have learned these many years back.
The lines show flat buttock lines, easy diagonals and good firm bilges. The keel is wide with unusual thickness through the rabbets. Overhangs are modest, and the form is, of course, sharp at both ends. There is enough forefoot to prevent the bow from falling off and a generous sized rudder that will bring the boat around sharply with no chance of getting her into stays, which is more than I can say for some recent double enters I have seen. Inga has a form that will move fast without pulling middle section waves and will not settle by the stern when going fast. And when heeled down will maintain the same fore and aft trim as when at anchor in smooth water. The latter is a characteristic that most double-end sailing boats have, and is one of the reasons this type is super seaworthy in the roughest kind of water.
Plans for Inga are $150
We apologize for the inconvinience, but we are no longer accepting orders at this time. The ordering process is in transition.