10 most difficult ships riddles

Mikasa is a pre-dreadnought battleship built for the Imperial Japanese Navy. After 1922, Mikasa was decommissioned in accordance with the Washington Naval Treaty and preserved as a museum ship at Yokosuka. Mikasa is the last remaining example of a pre-dreadnought battleship anywhere in the world.

RMS was used for seagoing vessels that carried mail under contract to the British Royal Mail. Having the title "RMS" was seen as a mark of quality and a competitive advantage, because the mail had to be on time. Today, some modern ships like RMS Queen Mary 2 also use "RMS", as a gesture to Cunard's history.

In a three year journey between 1903 and 1906, Amundsen explored the passage with a crew of no more than six, in the converted 47-ton herring boat Gjøa. Spending winters with ship trapped in ice, he learned from the local Netsilik people about Arctic survival skills that would later prove useful. For example, he learned to use sled dogs and to wear animal skins in lieu of heavy, woolen parkas. Amundsen later led the expeditions to discover the South Pole (1911) and the North Pole (1926).

Most American aircraft carriers are powered by two reactors. The only exception was the early-constructed USS Enterprise, having an eight-reactor propulsion design, with each A2W reactor taking the place of one of the conventional boilers in earlier constructions. Enterprise was meant to be the first of a class of six, but construction costs ballooned and the remaining vessels were never laid down. The design was replaced by two-reactor Nimitz class.

The French ironclad La Gloire ("The Glory") was the first ocean-going ironclad, developed after the Crimean War and launched during 1859. However Gloire was soon itself rendered obsolete by the launching during 1860 of the British HMS Warrior, the world's first iron-hulled ironclad warship.

Dmitriy Donskoy (TK-208) is a Russian Navy nuclear ballistic missile submarine, designated Project 941 Akula class (NATO reporting name Typhoon). With the decommissioning and scrapping of her Typhoon sister boats (TK-202, TK-13, Simbirsk, Arkhangelsk, Severstal, and TK-210), she is the largest submarine in the world in active service.

The Great Lakes are important shipping route, mainly for bulk goods like iron ore or coal. Several icebreakers are busy each winter to keep the route open.

Surcouf was the largest French submarine cruiser having served during the Second World War. The boat was lost during the night of 19 February 1942, in the Caribbean Sea, possibly after colliding with an American freighter. Surcouf was named after the French privateer Robert Surcouf. It was the largest submarine built until surpassed by the first Japanese

Dudley Walker "Mush" Morton was a submarine commander of the United States Navy during World War II. He was commander of USS Wahoo during its third through seventh patrols. Wahoo was one of the most-celebrated submarines of World War II, sinking at least 19 Japanese ships, more than any other submarine of the time. Morton and Wahoo disappeared in 1943 during a patrol near La Perouse Strait, and he was ultimately declared deceased three years later.

A BIBO carrier is equipped with a complete facility to pack the bulk material into bags. MV "Pioneer" BIBO has a cargo capacity of 20,000 tonnes and has been designed to load and transport refined sugar in bulk to Australian and overseas destinations and discharge it in bulk at 500 tonnes per hour or in bags at 3,000 tonnes per day.