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Preliminary design of the vessel, its detailed design, construction, trials, operation and maintenance, launching and dry-docking are the main activities involved. Ship design calculations are also required for ships being modified (by means of conversion, rebuilding, modernization, or repair).
A small waterplane area twin hull, better known by the acronym SWATH, is a catamaran design that minimizes hull cross section area at the sea's surface. Minimizing the ship's volume near the surface area of the sea, where wave energy is located, minimizes a vessel's response to sea state, even in high seas and at high speeds.
In sailing and boating, a vessel's freeboard is the distance from the waterline to the upper deck level, measured at the lowest point of sheer where water can enter the boat or ship. In commercial vessels, the latter criterion measured relative to the ship's load line, regardless of deck arrangements, is the mandated and regulated meaning.
Ancient boat building methods can be categorized as one of hide, log, sewn, lashed-plank, clinker (and reverse-clinker), shell-first, and frame-first. While the frame-first technique dominates the modern ship construction industry, the ancients relied primarily on the other techniques to build their watercraft.
The whaleback was a design by Captain Alexander McDougall (1845–1923), a Scottish-born Great Lakes seaman and ship's master. [2] At the time a vessel's size was limited by the locks and rivers that had to be navigated and by the materials and science of hull construction, not by the power and ability of steam engines to push hulls through the ...
Design. The M80 Stiletto is a U.S. Navy vessel designed for combat in shallow coastal waters. The 88-foot (27 m) Stiletto's unusual shape and patented M-hull provides a stable yet fast platform for mounting electronic surveillance equipment or weapons, or for conducting special operations.