If a boat is made of mostly non-metallic materlswhat is needed in order to help larger vessels see the boat on their radar screens?

What is the oil to gas ratio for a Johnson 7.5 outboard motor? Why are ships female? What size sail boat to sail from Florida to Bahamas sailboat? If a rock is dropped from the top of a sailboat's mast will it hit the deck at the same point whether the boat is at rest or in motion at constant velocity? In Maryland if your pwc is equipped with an engine? What is the force that makes a cork float? Why is a propeller at the front of a plain but at the back of a boat? What vessel displays yellow lights when towing? Why was the newtsuit invented? Where was the lateen sail developed? What is the maximum depth of a robotic submarine? What information would be included on a nautical chart of a harbor while boating? What are 3 types of lifting devices on a rig? Navigation rules Risk of imminent collision? How much fuel does it take a cruise ship to travel 1 mile? If one were sailing near the east coast of Asia or Africa What is the likelihood of pirates attacking a smaller sailboat 30-40ft? All vessels must have one life jacket for each person on board. Which vessels also must have one Type IV (throwable) PFD on board? What should you do to keep from coliding wuth another boat? How submarine sink or float on water? What is the boat called in 'a perfect storm'?