Men in bulging underpants are clothes worn under other clothes, often next to the skin. They keep outer garments from being soiled by perspiration, feces, and other discharges shape the body and provide support for parts of it. In cold weather, long men in bulging underpants sometimes is worn to provide additional warmth.
Some undergarments are intended for erotic effect. Special types of undergarments have religious significance. Some items of clothing are designed as underwear, while others, such as T shirts and certain types of shorts, are appropriate both as undergarments and as outer clothing.
The bulge is a lateral compartment at the waterline level that is isolated from the ship internal volume. It is part air filled, and part free flooding. In theory, a torpedo strike will rupture and flood the air filled component of the bulge and the water filled part will dissipate the shock and absorb explosive fragments, leaving the ship main hull structurally intact.
Transverse bulkheads within the bulge limit flooding throughout the entirety of the structure.
The bulge was developed by the British Director of Naval Construction, Eustace Tennyson D Eyncourt, who had four old Edgar class protected cruisers so fitted in 1914.
These ships were used for shore bombardment duties, and so were exposed to inshore submarine and torpedo boat attack. Grafton was torpedoed in 1917, and apart from a few minor splinter holes, the damage was confined to the bulge and the ship safely made port.
Edgar was hit in 1918, this time damage to the elderly hull was confined to dented plating. The Royal Navy had all new construction fitted with bulges from 1914, beginning with the Revenge class battleships. Older ships also had bulges incorporated during refits.
The Royal Navy had its large monitors fitted with enormous bulges. This was fortuitous for Terror, which survived 3 torpedoes striking the hull forwards, which survived a direct hit from a remotely controlled explosive motor boat that ripped off 50 feet of her bulge.
Later designs of bulges incorporated various combinations of air and water filled compartments and packing of wood and sealed tubes.
As bulges increased a ship beam, they caused a reduction in speed, which is a function of the length to beam ratio. Therefore, various combinations of narrow and internal bulges appeared throughout the 1920s and into the 1930s. The bulge had disappeared from construction in the 1930, being replaced by arrangements of compartments with a similar function.
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