A navy shower (or "sea shower") is a method of showering that allows for great conservation of water and energy. The steps in a basic navy shower are:

1. turn on the water
2. immediately wet the body
3. turn off the water
4. soap up and scrub
5. turn the water back on and rinse off the soap

The total time for the water being on is typically under 2 minutes and often less.

Navy showers originated on naval ships, where supplies of fresh water were often scarce. Using this method, crew members were able to stay clean, while conserving their limited water supply. The idea has been adopted by many people who wish to conserve water and the energy needed to heat the water, for both environmental and economic reasons. Maritime cruisers often take navy showers when they aren't in a port with easy access to fresh water. A ten-minute shower takes as much as 230 L (60 US gallons) of water, while a navy shower usually takes as little as 11 L (3 US gallons); one person can save 56,000 L (15,000 US gallons) per year. Overall savings are for a Florida household in 2001, using an electric water heater, that represented savings of roughly $380 per person per year.(from the wikipedia entry)

Go green....