Accidents can always happen. That is why safety on the boat is extremely important.
A Dondra catamaran is built to withstand much, but. . . In the event of a collision with, for example, a container floating under water, there is always a chance that the extra aramid protection at the underside of the boat, would fail and water could come inside.
When water comes in, it usually doesn’t get far: your boat is full of watertight zones.
If the accident is so serious that your boat takes a lot of water, the Dondra is constructed in such a way that the boat still will float, and you can stay on it, in most cases until you can move the boat to a safe berth.
(Bilge pumps cannot pump away too much water, they serve to keep your boat dry in normal circumstances and to inform you that there is water where there should not be any.)
In the event of a collision or an unfortunate maneuver in severe weather conditions, the catamaran could tip over and the bottom of the boat would then become the top. The mast, broken or not, hangs at the bottom of the boat.