Each region has a hard-cap limit of 32,000 Supply Units worth of ships that it can support.
If a player has more ships at a location than allowed by support units, excess ships will automatically be scrapped. Scrapped ships return no value.
Ships cannot move to a region that has already reached the SU limit, otherwise they would be scrapped on arrival.
Scrapped ships free up Support Unit space on their host region, but otherwise return no value.
A player may chose to scrap ships in order to make space at a region to build new ones.
A player may also choose to discontinue building a large ship and scrap it. Scrapping returns no value.
If a player wins a battle for a region and has more ships than the region can support, the excess ships must immediately move to a safe region to resupply.
If they have no safe (non-combat) region to go to, they are automatically scrapped and removed from play.