28 sounds like an old oak (6)
31 had hits in the 1990s (4 3 6)
37 often seen on big ships (9)
41 24hrs , 60mins (5) already got timer for another answer
thanks for any help
Washboard
noun - protective covering consisting of a broad plank along a gunwale to keep water from splashing over the side
device consisting of a corrugated surface to scrub clothes on