Deadliest Catch: On Deck - Season 5

The captains and their crews open up about the season that nearly took one of the fleet's most respected captains.

Sig fights to survive a massive heart attack; Josh struggles to prove himself; Bill learns a dark secret about Zack.

The fleet struggles as crabs vanish; Capt. Sig resumes the helm after a major heart attack; Wild Bill debuts his own brand new boat in a crisis season; attempting to rescue a heart attack victim.

The fall season begins with uncertainty; a seismic shift in sea temperature sends the fleet searching for displaced crab, while also fighting a large first storm.

Rising sea temperatures test the fleet; toxic smoke engulfs the Saga; Sean struggles to save the family business on the Brenna A; Wild Bill fears he could lose Nick to a terminal illness.

Wild Bill uncovers the truth about Nick McGlashan's terminal illness; a damaging mechanical issue threatens to crush Jake's future; warming seas force Keith into the unknown.

Captains Johnathan and Andy fish together, possibly for the last time; Captain Jake deals with a belligerent deckhand; Captain Keith reaches his breaking point and sends a crew member packing.

Captain Sig makes a life-changing decision; the Time Bandit takes on water and starts to sink; Captain Sean gambles on a new venture with a new crew; the Saga struggles to meet its quota.

Wild Bill struggles to pilot his new boat in big seas; Johnathan faces off with a massive swell in the perilous False Pass.

Competition doubles when the quota is cut in half; three captains arrive early for the winter season; Johnathan plots a dangerous 600-mile course to Russia.

Capt. Johnathan charts a treacherous 600-mile course to the Russian border; Capt. Sig faces the season that nearly killed him; a familiar face returns to the Summer Bay; the Saga loses one of its veterans.

An Arctic mega-storm rocks the fleet; Sig plays cat-and-mouse with towering waves; Keith watches an 800-pound crab pot launch into a deckhand; Wild Bill fights for a comeback.

Sig's stress takes a toll; Sean tries to dock in a hurricane; Keith is left dead-stick in massive seas; Jake motivates a defiant hand; Johnathan rolls the dice by Russia.

The fleet battles a massive arctic storm; Captain Sig's chest pains return, threatening the remainder of his season; Captain Jake struggles with a green crew and a defiant deckhand.

Sig, Johnathan and Jake attempt to run from a second arctic hurricane; Sig awaits news in the hospital; Wild Bill tries to stay out of harm's way while also handling dissention on deck; Sean lays down the law with Zack.

After suffering chest pains, Sig awaits news in the hospital; Wild Bill struggles to stay out of harm's way while also handling dissention on deck; Sean lays down the law with Zack.

Sig, Johnathan and Jake attempt to run from a second arctic hurricane, but Keith refuses to heed the warnings; stress-induced chest pains threaten the remainder of Sig's season.

Sean faces a collision course with another boat, two deckhands get taken down on the Wizard, and Jake almost loses a deckhand.

Two old friends race to finish their seasons, but one hopes to cap a storied career; Johnathan Hillstrand wants to bid farewell in a blaze of glory.

The U.S. Coast Guard scours the Bering Sea for a missing crab vessel while the fleet anxiously waits to discover the fate of its six-man crew; after a plea from his wife, Sig contemplates an early exit.

The fleet reacts when a crab boat disappears; Captain Sig makes an early exit; one last storm bears down on Captains Edgar, Bill, Sean and Jake as they finish out the season.