Phil Risko's team at Northstar work fast to refloat a trawler that's been blown onto the shore of a national park in New Jersey, before it suffers further damage. At the mouth of the Demerara River, Guyana, Dutch Salvage works blind to clear a sunken wreck that's a navigational hazard. In Virginia, salvors must seek out, locate and work to remove an unseen wreck that's become a navigational hazard for both military and civilian shipping.