A seabase starts with a base integrity of 10, however, this does not include the additional +2.0 the foundation adds. The depth of your seabase influences how quickly Hull Integrity is reduced, and a seabase above water does not influence Hull Integrity. There is no Hull Integrity in Creative Mode. When a Seabase is flooded, the breaches that appear inside must be repaired with the Repair Tool, but the Hull Integrity must be increased or else more breaches will appear, and the seabase will continue to flood.