Only nuclear submarines can go that long without refueling. The process of converting matter to energy releases a tremendous amount of energy from just a little bit of matter, so a fairly small amount of fuel lasts many years.
The marines do not use submarines. Only the Navy does.
Only in cartoons.
Only in Soviet Russia.
every 4 years
Females have been riding submarines for many years, but primarily only as riders (e.g., Contractors, Intelligence analysts, etc.). Up until recently, females serving aboard U.S. Navy submarines was restricted - however, with recent changes in policy, female officers will begin serving aboard FBM submarines within the next few years. Most navies with nuclear submarines (e.g., Royal Navy) don't allow women to serve aboard submarines due to the unique health risks that women are exposed to if serving aboard for long periods of time.
Females have been riding submarines for many years, but primarily only as riders (e.g., Contractors, Intelligence analysts, etc.). Up until recently, females serving aboard U.S. Navy submarines was restricted - however, with recent changes in policy, female officers will begin serving aboard FBM submarines within the next few years. Most navies with nuclear submarines (e.g., Royal Navy) don't allow women to serve aboard submarines due to the unique health risks that women are exposed to if serving aboard for long periods of time.
The US Soccer team only competes every four years because it is the required to do so because the Wold Cup tournaments is participated after every four years.
Only the House of Representatives is elected every two years.
There is usually a refuelling outage every 2 years or so, but only about 1/4 of the fuel charge is replaced every time, so any particular fuel assembly might stay in the core for up to 8 years. Fuel at the core centre burns up more quickly than at the periphery, so that's another factor. The pattern of refuelling visits will be determined by an assessment using computer programmes, by nuclear physics staff.
You only change the fuel pump when it fails. But do change the fuel filter every 50,000 miles.
We do not have a leap year every 7 years. It is every 4 years. It is possible that in a sequence of 7 years, that there is only one leap year in the middle of it. For example 2000 and 2008 were leap years, so in the intervening 7 years, there was only one leap year:2001200220032004 was a leap year.200520062007In order keep the calendar years synchronized there has to be a extra day added to February every 4 years. The other years that are not leap year are called common years.
At the beginning of 1917 the German navy had 111 submarines. This was a large increase from 1916 when they had only 68.