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Signalman 1 & C - Historic Naval Ships Association

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Figure 13-24.—Sail placementFigure 13-25.—Bow profiles.group is composed of conversions and experimentalprototypes that bridge the gap between the irregularshapes of World War II versions and the streamlinedsails of the nuclear age. If the sail topline is brokenand has an obvious step measuring one-fourth of thegroup sail height or more, it falls within groups 7through 9 (fig. 13-23), depending on the position ofthe sail.TYPES OF SUBMARINESFor the purpose of our discussion, we willcategorize submarines into three distinct groups:attack, cruise missile, and ballistic. All three groupscan be either conventionally powered (diesel/electric)or nuclear-powered.13-18

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