I won't be able to add tractor beam to existing ships because it's like an inventory item without an icon. So I can only include it for new ships. For bretonia battleship it was missing (already fixed), and about large transport... didn't know until I read about it now. No ships above 2000 cargo space can have tractor beams I think (without any modifications of cargo handling mechanism - ?). So all ships that have more than 2000 cargo will not be equipped with beams, like trains and large trains.
