I understand that tow to port is gone to avoid captains jumping over the last and risky 30k directly into the safety of the port. I like that. However, long passages over the open sea tend to be quite boring as they can take 4.5 hours now instead of 2.5 where you could tow the second half of the passage.
How about considering a tow to port which drops the sailor not directly in front of the port but some 30k away? Would save hours of boring and eventless sailing over the open waters but still prevent cowardscaptains from sneaking unseen into port under the watchful eyes of the enemy.
Would probably need some tweaking and careful consideration with respect to the individual capitals.