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The series was made of welded aluminum. Most Marinettes today are used on inland rivers and lakes, although some are found in saltwater locations. They are, due to their light weight, relatively shallow chine angle, flat transom and broad beam, relatively fast and economical for boats of their size.
Small outboard motors, up to 15 horsepower (11 kW) or so, are easily portable. They are affixed to the boat via clamps and thus easily moved from boat to boat. These motors typically use a manual start system, with throttle and gearshift controls mounted on the body of the motor, and a tiller for steering. The smallest of these weigh as little ...
The deck (floor) is composed of four interlocking aluminum plates, which are fixed to the "thrust board" at the bow end and the transom at the stern. This rigid structure, spanning the entire internal area of the boat, prevents the hull from collapsing or "taco-ing" under power.
This motor was based on previous models KE-7 Lightning and KF-7 Super 10 Lightning. Upgrades included redesigned connecting rods, upgraded aluminum clamp and swivel brackets, a new higher RPM magneto, improved porting, an 8 Reed valve cage (as opposed to KE-7 and KF-7's 4) and larger crankcase opening.
Vertical transom and stern of a modern cargo ship. In some boats and ships, a transom is the aft transverse surface of the hull that forms the stern of a vessel. Historically, they are a development from the canoe stern (or "double-ender") wherein which both bow and stern are pointed. Transoms add both strength and width to the stern.
How a 173-year-old law created for wooden ships could complicate rebuilding the Francis Scott Key Bridge in Baltimore María Soledad Davila Calero March 28, 2024 at 12:52 PM
This is different from northern Chinese junks, which are developed from flat-bottomed riverine boats. [31]: 20–21 The northern Chinese junks were primarily built of pine or fir wood, had flat bottoms with no keel, water-tight bulkheads with no frames, transom (squared) stern and stem, and have their planks fastened with iron nails or clamps.
Aluminum and aluminum alloys are used both in sheet form for all-metal hulls or for isolated structural members. Many sailing spars are frequently made of aluminium after 1960. It is the lightest material for building large boats (being 15–20% lighter than polyester and 30% lighter than steel).