After conducting thorough research, I was unable to find any specific information regarding a boat ramp named "Lincoln County" with the given coordinates in Washington state. It's possible that the ramp may be located on private property and not publicly accessible or may be a small, local ramp that hasn't received publicity or online presence.

Without any specific information, it's impossible to determine the type of boat ramp it is, its width, the body of water it services, or the types of craft permitted on the water. It's important to note that boat ramps can vary greatly in size, shape, and allowable uses depending on their location and purpose.

In general, boat ramps are used to launch and retrieve boats from bodies of water, such as lakes, rivers, or oceans. They can be made of various materials, such as concrete, wood, or metal, and may have additional features such as docks or parking areas. The width of a boat ramp can vary, but they are typically wide enough to accommodate the size of the boats that will be using them.

Regarding the body of water the Lincoln County boat ramp may service, it's possible that it could be a lake, river, or even the ocean, depending on its location. The types of craft permitted on the water would also depend on the specific rules and regulations of that body of water. For example, some lakes may have restrictions on the size or speed of boats allowed, or may only permit certain types of watercraft, such as kayaks or canoes.

In conclusion, without additional information, it's impossible to provide accurate details about the boat ramp named Lincoln County in Washington state.