Mighty Hull

Mighty Hull is a game mechanic in Hydro Thunder. It is activated when your boat begins to flash, shortly after boosting. Since there are no weapons in Hydro Thunder, Mighty Hull is the only way to slow down other racers. It can also clear debris and send other vehicles flying such as police and tour boats. Mighty Hull varies with its activation time depending on the boat, with lighter boats having a faster activation time and heavier boats having a slower activation time.

Description
"When your boosters are activated for a short period of time, your boat will begin to flash. When it does, your boat's Mighty Hull technology has been activated. While your boat is flashing, you can ram other boats and send them flying into the air! Mighty Hull also helps to rid your path of annoying obstacles" - Description from Hydro Thunder instruction manual