German ship under mass of ice, finally disappearing (8)
I believe the answer is:
berliner
'german' is the definition.
(someone from Berlin)
'ship under mass of ice finally disappearing' is the wordplay.
I cannot really understand how this works, but
'ship' could be 'liner' (liner is a kind of ship) and 'liner' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for berliner that I've seen before include "capital chap" , "'Ich bin ein . . . . . . . .' (JFK)" , "Person from the German capital" , "European citizen < in trio" , "German capitalist" .)