TheJ-turn and fish-hookrollover test are simulated and the simulationresultcanexpressed the rollover performance and can givesome reference to theprototypetesting.
His fishing methods were different: he used aluminium beer barrels as floats because wooden ones would break up in a minute, and rather than harpoons, with their stainless-steel darts that folded back and slipped right out of the fish, he preferred hand-held gaffs with a three-inch hook that went in and stayed there.