I think, every captain must respect himself and his crew, his profession.
I couldn't imagine myself drunken on the bridge!
It is profanation of the captain's profession to be drunken and navigate the ship.
Like a drunken surgeon, plane pilot, driver etc.
I know about accidents caused by drunken seamen.
Drunken seamen sometimes are on tankers, tall ships, bulkers, fishing vessels...
In most of these accidents these non-professional captains and sailors had lost diplomas, were degraded.
Drunken captain has no estime of his crew.
Best regards,
MJK.