About

The purpose of this blog is to design a houseboat that sails that can be built for not very much money and can be lived in and sailed around anywhere in the world. Yes, it will be, to use a hackneyed phrase, a “blue water” houseboat—one that's safe to sail on the world's oceans.

QUIDNON is a square boat. Square boats have existed for centuries, and were once the most common boats in many parts of the world. Properly equipped and ballasted they make very capable cruisers. This point has been proven. Square boats obey a basic rule, called "sea of peas": imagine a square boat sailing through a sea of peas, and whatever angle of heel. If the curvature of the bottom matches the curvature of the sides, then no pea will cross the chine between the two, and there will be no turbulence. QUIDNON obeys the "sea of peas" rule except near the transom, where it doesn't seem to matter much if the sides are a flatter than the bottom, to make the aft cabins wider and more comfortable.

Below are QUIDNON design specs, verified through hydrostatic and hydrodynamic analysis, and also using a 1:12 scale model.

HULL TYPE: SCOW
LOA: 37 FT • LOD: 36 FT • LWL: 35 FT • BEAM: 16 FT
STEERING: TWIN KICK-UP BOARDS & RUDDERS
RIG TYPE: CHINESE JUNK • SAIL AREA: 1000 SQ FT
DRAFT: BOARDS DOWN 7 FT, BOARDS UP 1.5 FT
DISPLACEMENT: 12 TONS • GROSS TONNAGE: 25 TONS
BALLAST: 8 TONS; WATER 5 TONS, STEEL SCRAP 3 TONS
CONSTRUCTION: FIBERGLASS OVER MARINE PLYWOOD
BUILD TYPE: MANUFACTURED KIT, RAPID DIY ASSEMBLY
ENGINE: 40 HP OUTBOARD IN INBOARD WELL
CRUISING SPEED: 6 KNOTS • MAX SPEED: 7.5 KNOTS
WATER: 1,380 GALLONS • GASOLINE: 50 GALLONS
PROPANE: 2 20-LB CYLINDERS IN VENTED LOCKER
ACCOMMODATIONS: SLEEPS 10 ADULTS, 5 WITH PRIVACY
LAYOUT: 2 AFT CABINS, VESTIBULE, GALLEY, HEAD,
SALON, 2 PILOT BERTHS, “U-BERTH” IN BOW