Here an idea how much detail you catch when you take
a shot offshore at some 4 km out and 55 mm.
Quiet good I would say, lack of sharpness can be due
to being on a speed-boat that moves, so it is hard stay still
to take a good shot. But, center seems ok, the edges are less sharp,
what is a lens issue only.
Look in original full size to get an idea.