pressure-watertight
61Caisson lock — A caisson lock is a type of canal lock in which a narrowboat is enclosed in a sealed box and raised or lowered between two water levels.HistoryIt was first demonstrated at Oakengates on the now lost Shropshire Canal in 1792, where its inventor,… …
62Amphibious ATV — Small off road, and typically six wheel drive, amphibious vehicles were developed in the early 1960s and quickly became popular in both the US and Canada. Once it established itself as a popular vehicle to enthusiasts and professionals worldwide …
63Moltke-class battlecruiser — SMS Moltke Class overview Name: Moltke class Operators …
64Kaiserliche Marine — The Kaiserliche Marine or Imperial Navy was the German Navy created by the formation of the German Empire. It existed between 1871 and 1919, growing out of the Prussian Navy and Norddeutsche Bundesmarine. Kaiser Wilhelm II greatly expanded the… …
65USS Maine (ACR-1) — This article is about the ship sunk in Havana, 1898. For other ships of the same name, see USS Maine. The Maine redirects here. For the band, see The Maine (band). USS Maine entering Havana H …
66Nevada class battleship — USS Nevada after her 1942 reconstruction. Class overview Name: Nevada class Builders …
67Bulkhead (partition) — A bulkhead is an upright wall within the hull of a ship. Other kinds of partition elements within a ship are decks and deckheads.EtymologyThe word bulki meant cargo in Old Norse. The Song Dynasty Chinese author Zhu Yu wrote of Chinese ships with… …
68Siebe Gorman Salvus — The Salvus is a light oxygen rebreather for industrial use (including by firemen and in coalmine rescue) or in shallow diving. Its duration on a filling is 30 to 40 minutes. It was very common in Britain during World War II and for a long time… …
69Vasovasostomy — Interventions infobox Name = Vasovasostomy Caption = ICD10 = ICD9 = 63.82 MeshID = D014669 OtherCodes = Vasovasostomy (literally connection of the vas to the vas) is the surgery by which vasectomies are reversed in males. It can be performed in… …
70Japanese raiders in Indian Ocean Campaign — Japanese raiders in Indian Ocean CampaignIn late 1942, enemy activities in the Indian Ocean had virtually come to an end. The German raiders, once disrupting the shipping lines in these waters had all (with the exception of a few) been destroyed… …
