They sail on for a while, when suddenly a storm breaks loose. The boat begins to fill with water. Realizing that sinking in inevitable, the Brit screams "God save the Queen!", and then jumps off.
They remaining three are fine for a while, but water is still pouring into the boat. Realizing that sinking is once again inevitable, the French dude screams "Viva la France!" and jumps into the water.
Once again, the boat survives, until even more water starts to pour in. Worried, the Texan screams "Remember the Alamo!", and throws the Mexican off the boat.