sentences:  Sig, the oldest of the three, took over as captain of the "Northwestern" full time in 1990.Under his leadership, the "Northwestern" boasts an astounding record of never having suffered a death at sea despite its home territory being the dangerous Alaskan crab grounds, where deaths average nearly one fisherman per week during the heart of its productive seasons.Today, the "Northwestern" continues to fish red king crab, tanner crab, and opilio crab; however, it is now one of few boats to engage in pot cod fishing as well, which was filmed for episodes of "Deadliest Catch" during the 2006 Opilio crab season.