Sealed Cargo (1951) — AI Story Visualization

Plot Analysis Summary

A wartime fishing voyage uncovers a covert submarine supply operation and culminates in the destruction of its hidden cargo.

Story Structure — 5 Plot Phases

A Dangerous Passage

Margaret travels toward Trabo aboard the Daniel Webster, which hires Konrad while suspicion grows around the sabotaged radio. Gunfire in the fog leads the crew to a damaged Danish ship.

Key Events

• Gloucester Catch Unloaded — The Daniel Webster unloads its catch in Gloucester during the Battle of the Atlantic. Characters: Margaret McLean Location: Gloucester harbor
• Passenger Bound for Trabo — Margaret McLean seeks passage to the small Newfoundland community of Trabo. Characters: Margaret McLean Location: Gloucester harbor
• Danish Sailor Hired — The short-handed trawler hires Konrad while Holger is already aboard as another Danish sailor. Characters: Konrad, Holger Location: Daniel Webster
• Voyage to Grand Banks — The Daniel Webster sails toward the Grand Banks fishing grounds. Characters: Margaret McLean, Konrad, Holger Location: North Atlantic
• Radio Sabotage Discovered — Holger reports that the radio has been sabotaged, creating suspicion among the crew. Characters: Konrad, Holger Location: Daniel Webster radio area
• Suspicion Among Travelers — The ship's captain suspects Konrad, Holger, or Margaret may be a German agent. Characters: Margaret McLean, Konrad, Holger Location: Daniel Webster
• Gunfire in Heavy Fog — At night, the crew hears gunfire in heavy fog and searches for survivors. Characters: Margaret McLean, Konrad, Holger Location: Fogbound North Atlantic
• Damaged Danish Ship Found — The crew finds the damaged Danish sailing ship Den Magre Kvinde. Characters: Konrad Location: North Atlantic

The Ship of Secrets

The Daniel Webster tows the Kvinde toward Trabo. Konrad questions the damage and discovers a hidden hold packed with torpedoes, while Holger secretly signals German forces.

Key Events

• Damaged Danish Ship Found — The crew finds the damaged Danish sailing ship Den Magre Kvinde. Characters: Konrad Location: North Atlantic
• Captain and Dead Body — Only the dazed ship captain and a dead body are found aboard the damaged vessel. Characters: Konrad Location: Den Magre Kvinde
• Tow Toward Trabo — The Daniel Webster takes the stricken Kvinde in tow and heads for Trabo. Characters: Margaret McLean, Konrad, Holger Location: North Atlantic
• Damage Pattern Questioned — Konrad observes that the gunfire struck above the waterline and damaged the tarpaulin but not the boat. Characters: Konrad Location: Den Magre Kvinde
• Hidden Hold Discovered — Konrad and the ship's captain discover a concealed hold filled with racks of torpedoes. Characters: Konrad Location: Den Magre Kvinde lower decks
• Pistol Loyalty Test — Konrad has a pistol but hands it over to prove that he is loyal. Characters: Konrad Location: Den Magre Kvinde lower decks
• Holger Signals U-Boats — Konrad observes Holger enter the hidden hold and radio German forces. Characters: Konrad, Holger Location: Den Magre Kvinde hidden hold

A Narrow Escape

An inspection is announced, but the covert operation remains active. Holger is left behind as the crew secretly returns to organize an ambush near Trabo.

Key Events

• Holger Signals U-Boats — Konrad observes Holger enter the hidden hold and radio German forces. Characters: Konrad, Holger Location: Den Magre Kvinde hidden hold
• Crew Returns by Boat — The damaged ship's crew arrives in boats, forcing the investigators to conceal what they know. Characters: Konrad, Holger Location: Trabo waters
• Inspection Announced — A Canadian flying boat officer checks the ship's papers and announces a corvette inspection for the next day. Characters: Holger Location: Trabo harbor
• Holger Left Behind — The ship's captain leaves one Danish crewman in port, using the arrangement to separate himself from Holger. Characters: Holger Location: Trabo harbor
• Night Ambush Prepared — The crew returns by dory and prepares a night ambush against the forces threatening the villagers. Characters: Margaret McLean, Konrad Location: Trabo

Fire on the Kvinde

The crew attacks the Kvinde at night, frees Margaret, and carries the burning vessel away from the village. Torpedoes are prepared for a controlled destruction at sea.

Key Events

• Night Ambush Prepared — The crew returns by dory and prepares a night ambush against the forces threatening the villagers. Characters: Margaret McLean, Konrad Location: Trabo
• Hostage Freed — The Kvinde is set on fire; its crew is overpowered or killed, and Margaret is freed from captivity. Characters: Margaret McLean, Konrad Location: Den Magre Kvinde
• Torpedoes Rigged to Explode — The ship is taken away from the village, and some torpedoes are rigged for an explosion. Characters: Konrad Location: Den Magre Kvinde
• U-Boats Approach — Two U-boats approach the Kvinde seeking supplies while a third later surfaces. Characters: Konrad Location: Open sea

The Final Wave

German U-boats approach for supplies, and the ship's captain wounds Konrad before being killed. The exploding Kvinde creates a wave that sinks the submarines.

Key Events

• U-Boats Approach — Two U-boats approach the Kvinde seeking supplies while a third later surfaces. Characters: Konrad Location: Open sea
• Konrad Wounded — The ship's captain obtains a gun, wounds Konrad, and is then killed. Characters: Konrad Location: Den Magre Kvinde
• Ship Explodes at Sea — The crew escapes by boat as the Kvinde explodes under German gunfire. Characters: Konrad Location: Open sea
• Submarines Swamped — The explosion creates a wave that swamps and sinks the approaching submarines. Characters: Konrad Location: Open sea

Story Breakdown

• Harbor Departure — The Daniel Webster begins a wartime voyage from Gloucester toward Trabo.
  • Margaret's Passage — Margaret travels to Trabo aboard the fishing trawler.
  • Konrad Joins Crew — The short-handed vessel hires Konrad as a Danish sailor.
• Sabotaged Radio — A damaged radio creates immediate uncertainty about hidden enemy activity.
  • Radio Failure — Holger reports that the Daniel Webster's radio has been sabotaged.
  • Agent Suspicions — The ship's captain suspects Konrad, Holger, or Margaret.
• Fogbound Rescue — Gunfire in the fog leads the crew to a damaged Danish sailing ship.
  • Distress Gunfire — The crew searches the night sea for survivors after hearing shots.
  • Kvinde Found — The damaged Den Magre Kvinde is discovered with few survivors aboard.
• Suspicious Damage — Konrad identifies evidence that the ship's reported attack may have been staged.
  • Contradictory Marks — Gunfire marks and the undamaged boat contradict a straightforward sinking attempt.
  • Towing to Trabo — The Daniel Webster brings the damaged vessel toward the harbor.
• Hidden Torpedo Hold — A concealed compartment reveals that the Kvinde is a covert submarine tender.
  • Loyalty Proved — Konrad gives up his pistol to demonstrate his loyalty.
  • Secret Cargo — The investigators find racks of torpedoes in a hidden hold.
• Holger's Betrayal — The suspected sabotage is connected to a covert radio signal for German U-boats.
  • Radio Signal — Holger uses a handheld radio inside the hidden hold.
  • Enemy Resupply Plan — The Kvinde is intended to resupply German submarine wolfpacks.
• Trabo Inspection — Official inspection pressure briefly threatens to expose the covert operation.
  • Papers Accepted — A Canadian officer finds nothing wrong with the ship's papers.
  • Holger Isolated — One Danish crewman is left in port to separate the operation from Holger.
• Nighttime Counterattack — The crew secretly returns to Trabo and attacks the hostile force under cover of darkness.
  • Dory Return — The crew leaves the vessel and returns toward Trabo in dories.
  • Village Ambush — A night ambush is planned to protect villagers from capture.
• Margaret Rescued — The burning Kvinde becomes the setting for the rescue and defeat of its remaining crew.
  • Ship Set Ablaze — The crew sets the Kvinde on fire to create confusion.
  • Hostage Freed — Margaret is freed after the remaining crew is overpowered or killed.
• Submarine Destruction — The hidden torpedoes turn the enemy supply vessel into a weapon against the approaching U-boats.
  • Konrad Wounded — The ship's captain obtains a gun and wounds Konrad.
  • Explosive Final Wave — The Kvinde explodes and the resulting wave swamps the submarines.

Directed by

Alfred L. Werker

Key Cast

• Dana Andrews — Pat Bannon
• Carla Balenda — Margaret McLean
• Claude Rains — Capt. Henrik Skalder
• Philip Dorn — Konrad
• Onslow Stevens — Cmdr. James McLean