mine has a pro[per hawse with cover. not difficult to install. place cover on it when sailing, and in rain.
another methiod is reverse clamshell vent.. but how to put the rode
into the hole.....oops
another method is remive anchor locker
and keep rode
another solution is , as your anchor locker
drains into bilges, i presume, as the question seeks prevention, install a larger bilge pump
, make it automatic and clean bilge
occasionally of the steenky stuff that comes in with anchor--i throw vinegar onto my chain when i need to put into anchor
locker without thorough cleaning
. it works.
i have noticed many production boats have bow lockers with drains in bows--as did my ericson
35..... water can come in this way. not much. it also departs from boat
well via this hole, as long as said hole is clear and functional.
seidelmann 37 with a fail point in hull-deck connection allowed much water into bilges-- the pump
removed it successfully.
vinegar is a help in any anchor
locker as it prevents steeeenk and corrosion
from salt water
. novel concept