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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.
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]
Model of a French 74-gun ship from 1755 showing tumblehome as its hull narrows rising to the upper deck. Tumblehome or tumble home is the narrowing of a hull above the waterline, giving less beam at the level of the main deck.
A lifeboat or liferaft is a small, rigid or inflatable boat carried for emergency evacuation in the event of a disaster aboard a ship. Lifeboat drills are required by law on larger commercial ships. Rafts are also used. In the military, a lifeboat may double as a whaleboat, dinghy, or gig.
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.
Initially, the right of innocent passage in the current sense began to take shape in the 1840s (as a customary rule) with the development of world trade and the emergence of steamships navigation, for which it was economically significant to use the shortest possible route often through the coastal waters of a foreign state. [5]
Jewish refugees look out through a porthole of a ship while docked in the port of Haifa, c. 1950–1959. A porthole, sometimes called bull's-eye window or bull's-eye, [1] is a generally circular window used on the hull of ships to admit light and air.
A Londoner pointing a torch at the ground during a blackout to find her way home at night in 1940 Blackout regulations in Norwich, England during the First World War.. During World War II, the Air Ministry had forecast that Britain would suffer night air bombing attacks causing large numbers of civilian casualties and mass destruction.
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