10 most difficult navy riddlesNavy quiz
What was the name of the Japanese flagship during the Battle of Tsushima? (currently a museum ship in Yokosuka)
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.
Use of brown powder was one of the major naval artillery improvements of the late 19th century. What was its advantage over black powder?
it burns slower
it burns quicker
it is water-resistant
it is more explosive
The introduction of brown powder, which burned less rapidly than black powder, allowed to use longer barrels, which resulted in greater accuracy. Slower-burning powder decreases firing stresses, allowing guns to last longer and to be manufactured to tighter tolerances.
Who was the leader of Greeks against Persians during the battle of Salamis?
Eurybiades was the son of Eurycleides, and was chosen as commander in 480 BC because the Peloponnesian city-states led by Sparta, worried about the growing power of Athens, did not want to serve under an Athenian despite the Athenians' superior naval skill. For all the enmity between the two, Eurybiades was ultimately assisted by the Athenian naval commander Themistocles.
What is the main reason to use nuclear reactor on a submarine?
it needs no oxygen
it needs no frequent refuelling
it is silent
it is small
Nuclear reactor requires no oxygen for combustion and emits no exhaust gas. It gives the submarine the ability to operate submerged at high speeds, for unlimited periods, dependent only on the endurance of its crew. Nuclear power revolutionized the submarine, finally making it a true "underwater" vessel, rather than a "submersible" craft.
Which battle is considered the greatest defeat of the famous 'Great Armada'?
Battle of Trafalgar
Battle of Lepanto
Battle of Gravelines
Battle of Oliwa
The Spanish Armada was a Spanish fleet of 130 ships that sailed from La Coruña in early summer 1588, with the purpose of escorting an army from Flanders to invade England. During Battle of Gravelines the Spanish fleet was damaged and forced to abandon its plans.
The USS Enterprise is a ship with the largest number of nuclear reactors. How many does she have?
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.
What is this?
Polish river monitor 'Krakow'
Prototype German submarine U-1406
British marine monitor Cyclops
French submarine cruiser "Surcouf"
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
In naval warfare of the Age of Sail, what was the most desired way to fire at the enemy?
fire towards stern
fire towards bow
fire towards port side
fire towards starboard
Although each shot of raking fire is more likely to miss the target, it will cause more damage when successful. In addition, the targeted ship will have few or no guns able to return fire. A stern rake tends to be more damaging than a bow rake because the shots are not deflected by the curved and strengthened bow.
What is the world's largest aircraft carrier by displacement?
USS John C. Stennis
USS Harry S. Truman
USS Gerald R. Ford
USS George H. W. Bush
The USS Gerald R. Ford (CVN 78) was delivered to the US Navy in May 2017, while initial operational capability is anticipated to be achieved in 2020. Its full load displacement is 100,000 t. It has the capacity to carry more than 75 aircraft, and can accommodate 4,539 personnel including ship’s company, air wing and other support staff.
What code was used in the navy before introducing SOS?
CQD is one of the first distress signals adopted for radio use. Although used worldwide by Marconi operators, CQD was never adopted as an international standard, since it could be mistaken for a general call "CQ" if the reception were poor. Germany's Notzeichen distress signal of three-dots/three-dashes/three-dots was adopted as the international Morse code distress signal. (This distress signal soon became known as "SOS" .