Two meet the classification of "Boat". the Motor Torpedo Boat and the Submarine. The submarine is no longer considered disposable because of the high production costs associated with its nuclear powerplant. The Destroyer is normally considered as the most disposable "ship" of the fleet, particularly after its WWII service in defending the fleet against kamikaze attacks.
During World War I the Germans used many different types of naval weapons including a large fleet of battleships. The most effective naval weapon that the German army had was the merchant u-ship submarines.
1. The greatest naval fleet of the 20th century was the USN. 2. The largest empire and the greatest naval fleet of the 20th century was Japans.
Horatio Nelson.
During World War 1, the Lusitania, a civilian boat, was struck by a German U-Boat killing many Americans propelling America on the side of the Allies. The boat was destroyed on May 7th in 1915. During World War 2, the Japanese bombed Pearl Harbor, a major naval base where most of the American Fleet rested causing the Americans to join on the side of the Allies once again.
A group of ships, be they naval or commercial, is called a 'Fleet' . A smaller group of Naval ships is often called a 'Flotilla'. The word 'Fleet' is also applied to trucking company/bus company/ railway company /airline company owning a fleet of lorries/buses/trains(locomotives)/airplanes.
The Battle of Midway is by far in my opinion the most important in the Pacific. U.S. victory at Midway led to the destruction of the Japanese naval fleet.
Most people believe it was the battle of Guadalcanal where USA enterprise, battleship North Carolina and many other navy ships crushed the Japanese fleet as a counter to pearl harbor.
The most fundamental change that the aircraft carrier introduced to warfare was extending the range of naval fleet's effective firepower. This was made possible by the airplane. Prior to the inclusion of aircraft in the naval equation, the farthest offensive range was based on the fleet's biggest guns (on the battleships). With aircraft carriers, the range was extended by a factor of more than 10.
because it destroyed most of the American naval fleet which was lined up in Pearl Harbor.
It was Germany's MOST successful naval vessel. Germany was never strong in aircraft carriers, battleships, cruisers, nor destroyers.
(As this question is in the WW2 category, this answer is specific to WW2 combatants) "fleet admiral" can refer either to a role, or a rank. As a rank, "fleet admiral" was formally known as "Admiral of the Fleet" in the Royal Navy, Soviet Navy, "Großadmiral" in the Nazi Kreigsmarine, "Fleet Admiral" in the US Navy, and Marshal-Admiral (Gensui) in the Imperial Japanese Navy. In all cases, it was the highest naval rank in each country. Most countries seldom had more than one or two persons serving at that rank at one time. The exception was the US Navy, which had 4 serving Fleet Admirals by the end of WW2. The duties of someone filling the rank of Fleet Admiral generally would be considered Logistical and Grand Strategy - that is, they were almost exclusively shore-bound commanding vast collections of fleets of ships in far-flung campaigns, or heavily involved in naval production and procurement. As a functional role, "fleet admiral" generally refers to the commanding admiral of a specific fleet. It can refer to a variety of ranks of admiral, but, was generally not applied to anyone not at least of admiral rank; those of less than admiral rank who commanded collections of ships were usually afforded the title "commodore". If there were several admiral-ranked personnel in a fleet, "fleet admiral" would be the moniker applied to the one in command (usually the most senior, but not necessarily, depending on circumstances). The role of fleet admiral is a tactical command - it involves directing the operations of the fleet, according to the grand strategy directed by the naval command authority. A fleet admiral would have wide latitude of both action and authority to accomplish their assigned mission(s). Their command usually included not just naval vessels, but transport vessels, naval bases, marines, and sometime even non-Navy assets in the area of operation.
In the process of imperial expansion Rome built the most powerful fleet in the Mediterranean. This started in the First Punic War 264 BC-241 BC) when Rome had to match the size of the Carthaginian fleet. The Carthaginians, together with the Greeks, were the great naval power of this sea. With the development of thriving trading networks around the empire, Rome also created a large merchant fleet.