. >> brothers john and bob dubois from mission viejo, california, charter a fishing boat for an adventus overcast day in alaska inland, the water is providing a bountiful catch for the six tourists on board this steel-hulled fishing boat. >> here's another one coming up. >> but their luck begins to change from big fish to big trouble. >> everybody get one of those on, please. >> turns out the motor located under the deck has malfunctioned and broken apart. its metal pieces ripping a hole in the boat. >> we were just having fun with the camera back and forth, and then it evolved into much more. so i just kept the camera running. >> one of the diesels apparently sheared a shaft, and we're taking on water. along with an electrical problem, we lost the radio for communication. >> to make matters worse, the gps is shot, and there's no chance of using the ship's radio to call for help. >> filling up the zodiac right now with some air. we're all going to pile in here. this is really unbelievable. >> can you hear me? hello? >> bob calmly narrates the scene as emergency preparations are executed