Peak demand can vary greatly based on the number of simultaneous water uses, the flow rates of individual water fixtures, and the length of time fixtures operate. 5 gpm (two fixtures running simultaneously at 2.5 gpm) is a good estimate of peak demand, for the typical household. Water wells that reliably yield 5 gpm should be able to meet peak and daily needs for most residences. Wells yielding less than 5 gpm, however, are sometimes the only water source available.
Lifeboat may refer to: Lifeboat (shipboard), a small craft aboard a ship to allow for emergency escape. Lifeboat (rescue), a boat designed for sea rescues. Airborne lifeboat, an air-dropped boat used to save downed airmen.
I thought it was because the difference between ship and boat.. A boat is a small vessel that can be carried aboard a ship.. Like whale boats, patrol boats, skiffs, etc. Originally submarines were small craft that were carried by and launched from ships. Today's submarines however are too large and would never be carried by any ship. I was on a pier once, discussing this issue with a Navy officer, as we looked at the 560 ft long Trident submarine in front of us.