Ocean liner (4)
(Other definitions for sand that I've seen before include "Content of hourglass" , "Grains by the sea" , "Smooth with abrasive paper" , "lover of Chopin" , "Beach/desert material" .)
'ocean liner' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ship that I've seen before include "Transport as on sea-going vessel" , "Vessel that carries passengers or freight" , "craft of 1d [ADVENTURE]" , "Sea-going craft" , "part of navy" .)