What does coastguard consider a pwc?

A swimming pool contains 640 cubic meters of water .it leaks at a rate of 800 litres a day how long will it take to empty? Is Poseidon a brave man? Why do Dive suits for undersea exploration have which type of device attached to help the diver breathe? When boating what does a red flag with white diagnol stripe mean? Can chlorine kill swimmers? Is skipper a boy or girls name? In Virginia if you see a displayed diver-down flag while boating how far away must you stay from the flag? Is their less oxygen deeper in water? When did Pocket Pool happen? Where are whirlpools found? What does it feel like to wear a swimsuit Are they tight? How old do you have to be to use a KAYAK alone? What does it cost to buy and have installed a kayak pool? What are examples of streams? How do you surfboard in panfu? Can a water pump go bad without leaking? What is sluftering? When does salt go bad? Difference of a pool skimmer and pool filter? How is swimming funded?