I hate reversing big ships into docks... so I tried a few science experiments to see if I could "reel in" the ships into the docks using harpoons...
The balista on a base does attach, but can't reel in the ship. Same with a balista on a horse carriage...
Then I built a sloop with a balista to act as a parking tug-boat... but alas, doesn't work either
As troubleshooter I want to confirm that the ships that i hooked a harpoon onto are friendly in-company ships and are undocked. The test ship is a Brig. The environment is a shallow coastal dock, but deep enough for a brig to move over.
Reeling in ships should be a thing.
