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A moon pool is an equipment deployment and retrieval feature used by marine drilling platforms, drillships, diving support vessels, fishing vessels, marine research and underwater exploration or research vessels, and underwater habitats. [1]
Sidemount diving offers some benefits in the flexibility of equipment. Cylinders suitable for sidemount diving are usually freely available for rental, unlike manifolded twin sets for back-mounted use, which allows the traveller to conduct technical or overhead environment dives without having to source twin cylinder sets.
Comparison of conventional hull and the Visby-class corvette. Tumblehome has been used in proposals for several modern ship projects. The hull form in combination with choice of materials results in decreased radar reflection, which together with other signature (sound, heat etc.) damping measures makes stealth ships.
Sailors' superstitions are superstitions particular to sailors or mariners, and which traditionally have been common around the world. Some of these beliefs are popular superstitions, while others are better described as traditions, stories, folklore, tropes, myths, or legends.
HMT Aquitania wearing dazzle camouflage. Patterned ship camouflage was pioneered in Britain. Early in the First World War, the zoologist John Graham Kerr advised Winston Churchill to use disruptive camouflage to break up ships' outlines, and countershading to make them appear less solid, [14] following the American artist Abbott Handerson Thayer's beliefs.
At the bow of the boat are storage bags for equipment (foot pumps, extra lines, etc.) and a special fuel bladder, which can be of either 6- or 18-gallon capacity and which feeds the engine via a flexible hose. Deflated and rolled up, the boat and all necessary equipment can easily fit into the bed of a small pickup.
A glass-bottom boat is a boat with sections of glass, panoramic bottom glass or other suitable transparent material, below the waterline allowing passengers to observe the underwater environment from within the boat.
Skipjack under sail. The skipjack is a traditional fishing boat used on the Chesapeake Bay for oyster dredging.It is a sailboat which succeeded the bugeye as the chief oystering boat on the bay, and it remains in service due to laws restricting the use of powerboats in the Maryland state oyster fishery.