While clearing out my bugtrack, I stumbled upon an old idea of Nu's suggesting
that ship's get lanterns for lighting up the rooms. While I think he meant
something like the now existing 'shiproom light' command, it turns out that
while Ooga was still a wizard, he coded some lanterns that hang out the
outside of the ship. I finally got around to putting them in. You can now
access a 'ship lantern' command after dock+resummon/boot which will
provide some light to the outerworld room that your ship is in. Naturally, the
larger the ship, the more light it will produce.