In the 1400s what jobs did they have on a sailing ship?

Does a Boeing 707 have propellers? How many ships sail in the river medway? What is the area between the red and green buoys? Which is the best room on cruise ship? How do you can start a Cessna 172 engine with external power? What is the correct way to measure the overall length of the boat? Where are houseboats found? Which country did they sail for? What did they do to the boat after leaving the ship the second time? What are White lettering and symbols painted on the surface of roadways are used to what? What is the term for the depth needed to float a boat clear of the bottom? What does a buoy with number 4 and a flashing red light mean? How can you calculate the visibility? Best describes no wake or idle speed under Virginia boating laws? How many times do you blast your horn if you are trying to pass a boat to the left? Where do you find the VIN number on a 88 seadoo jet ski? What is the first thing you should do when retrieving a boat onto a trailer? Does the size of a sail increase the speed of a boat? What will happen if You are operating a pwc you are heading straight toward a dock you turn the engine off and then turn the steering control hard right which way will the pwc go? How fast is idle speed in a boat?