After leaving their uranium safely guarded by the Army, Jack and his friends discuss going into the interior. The guys help hoist the heavy box out of the Spindrift. Betty…
Jack and his friends are searching for a native who has a wristwatch that they believe belongs to professor Lorrie. Even if they find the native, how will they communicate…
Coming ashore, Michel is left onboard to keep the Spindrift secure, while Jack Armstrong and his friends go to find the commander of the Army troops. Uncle Jim describes the…
With the pirates approaching the Black Shark, Jack and his friends secure the uranium. Uncle Jim listens to Jacks's plan to evade the pirates by navigating the shallow waters of…
On the bottom of the ocean, uncle Jim and Jack explore the sunken yacht containing a cargo of uranium. On the surface, the crew keeps a watchful eye out for…
Having returned to their schooner, the Spindrift, Jack and his friends begin their diving operations. Jack and Billy discuss the importance of their jobs in doing deep-sea diving. Piping in…
Under smooth sailing, and right where they need to be in the Sulu Sea, Jack Armstrong and his friends get ready to launch the autogyro. With the flying machine in…
The sturdy, 2 masted schooners, the spindrift won't let the big storm waves stop her progress. As the guys keep the ship plowing through the waves, Betty does her best…
Winds and waves won't stop the brave crew of the Spindrift as it tries to outrun the diesel-powered Black Shark. Jack Armstrong and Billy man the controls as they evade…
Under typhoon winds, the schooner Spindrift hopes to give the pirates on the black Shark the slip, So far, the crew hasn't been able to spot the Black Shark, and…