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Furthermore, the absence of ballast makes them considerably lighter than a keelboat of similar size (240 kg for the Astus 16.1 compared to 800 kg for a 16 ft keelboat). Heavier boats require a stronger and heavier road trailer, making the towing weight even greater.
Float-on/float off vessels transport oil drilling rigs. Such ships can carry the rigs from their construction site to a drilling site at roughly three to four times the speed of a self-deploying rig. Rapid deployment of the rig to the drilling site can result in major savings. They also transport other out-sized cargo and yachts. [4]
A pontoon boat is a flattish boat that relies on nautical floats for buoyancy. Common boat designs are a catamaran with two pontoons, or a trimaran with three. [2] In many parts of the world, pontoon boats are used as small vehicle ferries to cross rivers and lakes. [3] An anchored raft-like platform used for diving, often referred to as a pontoon
Heavier boats are better equipped to move at high speeds without capsizing, whereas lighter boats can be speedy using less power, a.k.a., slower acceleration. Think of it like torque on a car (or ...
The 18 short tons (16 t) capacity float was 8 feet 3 inches (2.51 m) wide, 33 feet (10 m) long, 2 feet 9 inches (0.84 m) deep. [45] Solid ponton. Solid aluminum-alloy pontons were used in place of pneumatic floats to support heavier bridges and loads. [37] They were also pressed into service for lighter loads as needed. Treadway
Most were about 4 metres (13 ft) long and stepped hulls were employed with a 75-millimetre (3.0 in) step to induce air under the hull, to enable the boat to float on air bubbles. The principle behind 'planing' was not fully understood. Thus, hulls were flat bottomed with an upward curve at the bow and the step 2 ⁄ 3 of the way aft. The sheer ...
Three-time Rolex Sailor of the Year Tom Slingsby gives us a glimpse into a new sort of sailing.
A crane vessel, crane ship, crane barge, or floating crane is a ship with a crane specialized in lifting heavy loads, typically exceeding 1,500 t (1,476 long tons; 1,653 short tons) for modern ships. The largest crane vessels are used for offshore construction .