What type material is a mercury lower unit made of?

What is the age of a mercury 110 9.8 serial number 2620230? Which of the following sound signals is required of a Power Boat that is underway but is not moving during periods of restricted visibilit? What is small rowing boat called? Do you need a state driver's license to drive a jet ski in wi? What is a boat that can float on water? Will England let russia build a military base in iceland capable of atacting England with Russia nuclear submarines? What is the firing order of a 88' mercury 100HP 4-cylinder outboard.? What is the hazard marker? What is the most efficient model of a submarine? What TV series was about German submarine played by HMS Andrew? What is the oil to gas mixture for a 2HP model 2R76s Johnson outboard motor? What type of personal flotation device has the greatest amount of buoyancy? What pound thrust in a trolling motor would be needed for a 20 ft pontoon boat? What boat trailers with too little tongue weight tend to do what? Can you repossess property not paid for such as a water pump? Who were the costars of the show Love Boat? In restricted visibility a power driven vessel underway gives which sound signal every 2 minutes? By law what age children must wear a USCG-approved PFD at all times while underway on a vessel less than 26 feet long? Can you use a car motor to replace a boat motor? To which destinations do Crystal Cruise ships sail?