I just thought of this, thought it'd be a fun discussion.
But when the Kraken goes to inhale you the normal response is to hide below decks.
I'm imagining you can save a few precious seconds and resume firing faster if you hide yourself inside the cannon rather than run below decks.
It's goofy. But the mind set is that as a solo player I often have very limited time to get quality shots. Hiding below decks during the vacuum wastes time.