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Phil Bolger was unconventional in many ways and, among many large boats, yachts and custom designs, took an interest in what he termed "evolving crafty ways of building boats". [4] As far back as 1957 he designed "Poohsticks" [ 5 ] as a small plywood rowing skiff to be simply and economically built at home (originally by his brother).
The bulkhead, left, prevents water from entering at Lock and Dam No. 2 so work can be done on the gates to the chamber, right, Jan. 30 on the Mississippi River in Hastings, Minnesota.
The underwater protection was an internal "bulge" that consists of four longitudinal torpedo bulkheads forming a multi-layered system designed to absorb the energy from an underwater explosion equivalent to 700 pounds of TNT (1.3 GJ). The protection system was designed for the torpedo bulkheads to deform and absorb energy while several ...
Today, bulk carriers make up 21 percent of the world's merchant fleets, [2] and they range in size from single-hold mini-bulk carriers to mammoth ore ships able to carry 400,000 metric tons of deadweight (DWT). A number of specialized designs exist: some can unload their own cargo, some depend on port facilities for unloading, and some even ...
They fired 2,700-pound (1,225 kg) armor-piercing projectiles at a muzzle velocity of 2,500 ft/s (762 m/s), or 1,900-pound (862 kg) high-capacity projectiles at 2,690 ft/s (820 m/s), up to 24 miles (21 nmi; 39 km). [N 6] At maximum range, the projectile spends almost 1 + 1 ⁄ 2 minutes in flight. The maximum firing rate for each gun is two ...
Internally the hull was divided by two 107 m (351 ft 1 in) long, 18 m (59 ft 1 in) high, longitudinal bulkheads and further transverse bulkheads dividing the ship into nineteen compartments. Great Eastern was the first ship to incorporate a double-skinned hull, a feature which would not be seen again in a ship for 100 years, but which would ...
The strength of ships is a topic of key interest to naval architects and shipbuilders. Ships which are built too strong are heavy, slow, and cost extra money to build and operate since they weigh more, whilst ships which are built too weakly suffer from minor hull damage and in some extreme cases catastrophic failure and sinking.
Anti-submarine armament was two racks for 300-pound (140 kg) depth charges at the stern and six K-gun 300-pound depth charge throwers amidships. Anti-aircraft armament initially was light, with a quadruple 1.1"/75 caliber gun located in an elevated tub between the number three and four 5-inch gun mounts and six Oerlikon 20 mm cannons (two in ...