Does a submarine cruise underwater or sail underwater? [closed]
Solution 1:
Google ngram result for 'submarine cruise' can be found here. And for 'submarine sail' here.
'sail' is used as a verb in relation to submarine in this specialist publication about a submarine called the Dreadnought.
'cruise' seems more often to be used as an adjective or a noun, rather than a verb.
The etymology of 'cruise' links to 'crossing' and 'chasing', so 'sail' seems the most apposite choice for normal, non-allegorical usage. That said, it could be a deliberate use of 'cruising' to imply hostile intent.
Solution 2:
In my opinion, 'sail' as a verb is used to describe the object being afloat of the liquid in question. As it is clearly understood, that a submarine is underwater, the notion that it 'sails' sounds absurd to me. So I would say, that a submarine cruises underwater.