[Irishaccent=on] Having grown up in a fishing village and spent me summers as a young feller fishing with my uncles and grandfathers, I know sea lingo.
If ya 'went into the water' - it's a phrase used to state that you, by choice, went into the ocean (aka you bloody jumped in.) Now, if da vessel you was was on 'went into the water', it meant it was launched from drydock into the water - dat's what happens when ya launch yer boat back into the water.
If you're on a ship, boat, dingy, and it sinks, and you didn't get out in time and died in the sinking, the correct lingo is "ya went down with da ship." Cept, if you're in a dingy, it sinks, and you're still in it when it goes under, by - I don't know what yer made of...rocks?
And if you still disagree, well, dere's no help for ya. [/irish accent=off]