I guess boat mattresses need the same amount of care as a regular mattress at home. A mattress is a mattress is a mattress…meaning, its condition can change overnight, regardless if you sleep on it frequently. Boat mattresses are exposed to moist and humidity and some form of cleaning and caring is also needed for it. Eventually, you might have the need to replace this. But as boat mattresses differ in size and specification, you’re better off seeking the services of a custom boat mattress designer, like Knoxfoam . Price would of course vary, depending on what you require.