boat senses

When I step on a boat
I suddenly become starboard-handed
but
with senses expanded, topside
on deck,
I spin 'round
- and I bow.

For I know
I am suddenly
port-handed now.
Now my dear, it would be
every bit apropos
if you handed me a glass
of port. Just so. And poured one
for yourself, quite casually.
If that's the sort of thing
that's done on boats? You see
I don't know. For all I knew,
port is never imbibed on board. Perhaps
porter's used, instead? Either
way, I'd take it from you
in my port-hand, natch -
from whichever hand you extend.
Dealer's choice, with a clink
and a toss, it's down the hatch.
I think I can manage that much
just then, as my senses
expand and catch
in the rigging and waves
I suddenly understand.