Sea missile in depot or moved (7)

I believe the answer is:

torpedo

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'sea missile' is the definition.
'torpedo' can be an answer for 'missile' (missile from a submarine). I'm not sure about the 'sea' bit.

'depot or moved' is the wordplay.
'moved' is an anagram indicator.
'depot'+'or'='depotor'
'depotor' is an anagram of 'TORPEDO'.

'in' is the link.

Can you help me to learn more?

(Other definitions for torpedo that I've seen before include "[SOMETHING FISHY]" , "Naval missile" , "Missile fired from underwater submarine" , "Self-propelled submarine weapon" , "Self-propelled underwater explosive device" .)

I've seen this clue in The Sun.

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