Best movies like SOS Coast Guard

Martians come to Earth to build an H-bomb strong enough to blast Earth out of orbit so that Mars can be moved into its place in closer proximity to the sun. Super-scientist Larry Martin, inventor of the first stratospheric-flight spaceship as well as a jet-powered personal flying suit with helmet, is called upon by the government to investigate ramped-up UFO reports occasioned by the Martians' spaceships. The Martians, meanwhile, led by Marex, engage a renegade earth scientist and a gaggle of gangsters to help them steal supplies, operate a menacing robot, and build their bomb. This movie serial in 12 chapters was originally planned as a sequel to "Radar Men From The Moon" with Commando Cody as the hero but at the last moment the main characters' names were changed and all other references to that serial removed from the script.

A 12-episode serial in which a son avenges the death of his father at the hands of corrupt politicians. He develops a wide variety of complex devices in his crusade . . . ray guns, robots and a 'vanishing belt.'

The first victim is the butler of South African millionaire Wexler, who hires hard-hitting private eye Steve Martin for protection. Once at Wexler’s palatial Cape Town estate, Martin meets the patriarch’s family, close associates – and possible suspects. When it’s discovered that the key to the killing may lie in an old war photograph, Martin sets out on a mission to unravel the identities of the men in the picture before they become target two through VICTIM 5.

After a young boy is almost runover by a maniac on a highway, a re-encounter and confrontation by the boy's father with the driver sets off conflicts with a carful of maniacs.

A gang of urban street kids and a club of suburban would-be federal agents, at first rivals, join forces to rescue the father of one of the kids, the inventor of a super-explosive and its remote detonator, from the clutches of a band of foreign subversives call the "Flaming Torch Gang". A 12-episode movie serial with the chapters: •1. Enemies Within •2. The Blast of Doom •3. Human Dynamite •4. Blazing Danger •5. Trapped By Traitors •6. Traitors' Treachery •7. Flaming Death •8. Hurled Through Space •9. The Plunge of Peril •10.The Toll of Treason •11.Descending Doom •12.The Power of Patriotism

The Coast Guard makes a daring rescue attempt off the coast of Cape Cod after a pair of oil tankers are destroyed during a blizzard in 1952.

Two expeditions are trying to reach the Lost City of Zoloz -- one headed by Professor Davidson, a scientist who wants to establish an archaeological site, and the other by a greedy treasure hunter who wants to keep the fabled treasures of the city for himself. An agent of a foreign power also wants to establish a secret airbase there, so he stirs up the natives against The Phantom, who has been able to get them to stay peaceful so far. When The Phantom is murdered, his son takes his place and sets out to restore peace to the jungle and stop the agents' and the treasure hunters' nefarious plans.

The Shadow battles a villain known as The Black Tiger, who has the power to make himself invisible and is trying to take over the world with his death ray.

Don Winslow (titular hero of the serial "Don Winslow of the Navy") is reassigned to the United States Coast Guard, to guard the coast against saboteurs and sneak attacks.

A test pilot and his weather observer develop a "robot" control so airplanes can be flown without pilots, but enemy agents get wind of it and try to steal it or destroy it.

A mad scientist attempts to rule the world by creating various elaborate inventions.

Four flying G-Men protect America against enemy spies; one of the four assumes the identity of The Black Falcon, to befuddle the saboteurs even further.

Doris lives with her rough Coast Guardsman father. He has plans for her to marry an up and coming officer, but there is competition when a new, brash, Guardsman enters the picture. Dad hates the new guy, mostly because he is like himself.

This made-for-TV movie follows a group of friends as they try to find a boat lost for 50 years in the Bermuda Triangle.

The Wrecker wrecks trains on the L & R Railroad. One of his victims is Larry Baker's father. Baker wants to find the evildoer, among a host of suspects, but it will be difficult since the Wrecker can disguise himself to look like almost anyone

A mad scientist named Dr. Satan plots to steal key pieces of technology to enable him to build an army of robots based on his prototype to conquer America. The only one standing in his way is Bob Wayne, who fights Satan as the enigmatic Copperhead. Mysterious Doctor Satan is a 1940 film serial named after its chief villain. Doctor Satan's main opponent is the masked mystery man, "The Copperhead", whose secret identity is Bob Wayne, a man searching for justice and revenge on Satan for the death of his step-father. The serial charts the conflict between the two as Bob Wayne pursues Doctor Satan, while the latter completes his plans for world domination.

The heirs of Anton Benson are searching Bensonhurst for hidden gold; they are joined by a reporter, a gangster...and a masked fiend known as The Iron Claw.

Evil Hassan slips back into his native land of Ahad and plots to overthrow his twin bother, Kasim, who has just been crowned the Caliph. Hassan enlists the aid of the chief Chamberlain, Faud and they send several henchmen into the royal palace, who then knock Kasim unconscious. Faud and Hassan dispatch a couple of different hirelings to take Kasim into another part of the town and murder him.Kasin comes to and gets away, but has been wounded. Omar, a beggar, takes Kasim to his home and nurses him back to health. But, it takes a few weeks for Kasin to get healthy and, by that time, Hassan has a firm grip on the duties of a Caliph. In a storeroom, Kasim finds a coat of mail with a great hawk emblazoned across the chest and promptly decides this is the costume he will wear while fighting to get his old job back. Meanwhile, the Emir of Telif shows up with his daughter, Princess Azala, with the intent of marrying her off to the local Caliph.

The war lords of a potential enemy of the US has the spy ring, led by John Baroda, the Spy King and his aide Nitra, sabotaging the plans for a vast defense system of radar stations along the American borders. Radar Defense Bureau operative Chris Calvert comes to the rescue of a brilliant radar scientist, Joan Hughes, who has been kidnapped by Baroda henchmen in chapter 1 ("The Fatal Fog"), and the two battle together before putting an end to the Spy King in the aptly-named chapter 12, "Day of Reckoning".

A sailor suffering from post-traumatic stress becomes involved with a beautiful and enigmatic seductress married to a blind painter.

A team of two-fisted insurance investigators (one of whom disguises himself as The Masked Marvel) endeavor to discover and thwart the loathsome saboteur Sakima.

A gentlemanly detective known as The Falcon calls on his brother to help him stop the Nazis from assassinating a key diplomat.

Claire Forrest seeks her kidnapped scientist father, hidden somewhere on Mystery Island. He is held and forced to work on diabolical inventions by Captain Mephisto, a costumed villain.

An adventure serial presented in 12 chapters. Inventor Thomas Edmunds uses a super plane, 'The Phantom,' to protect his new anti-gravity invention, the Contragrav, from theft.

A trio of robbers, two brothers and their twisted genius leader, invade a lightship, but don't reckon on the crew fighting back.

A warlord from Mars recruits an Earth industrialist with a Nazi past to manufacture weapons by means of which Mars can take over the Earth. Feature version of the 1951 movie serial "Flying Disc Man from Mars".

A famous scientist invents a humanoid robot (the titular "monster"), so a greedy rival scientist plans to steal it for use in his criminal plans. His henchmen often kidnap a trained gorilla (the titular "ape") from the zoo, to aid in the schemes.

Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.

Feature version of the 1949 serial, KING OF THE ROCKETMEN: Young member of scientific group uses new rocket-powered flying suit to thwart shadowy saboteur known only as "Dr. Vulcan".

Bob Randall, temporarily in command of the Coast Guard vessel Niobe, expects a promotion and the captaincy of his ship. Instead, he is replaced by Lieutenant Mays, son of the area commander. Mays is afflicted with a fear of the sea, although he has served well in Coast Guard aviation. His father, however, thinks Mays can overcome his fear by taking command of the Niobe. When seal poachers kidnap Bob Randall's girlfriend Connie, Bob and Mays disagree about the proper means of rescuing her and capturing the seal poachers. When Mays's inexperience and phobia foil their attempts at rescue, Bob comes up with his own plan.

Corporal Larry Grant and Sergeant "Mac" McGowan, of the United States Marine Corps, are rival for the love of Frances Schiller, but team up to hunt down "The Tiger Shark," a mad, scientific wizard who is holding Sergeant William Schiller, Frances' brother, a prisoner on a wild, jungle island in the Pacific.

Alice Grayson's uncle develops a wireless torpedo that can be controlled by radio. After he announces his invention to several of his colleagues, two of them murder the scientist, steal the blueprints and prototype, and make plans to sell both to the highest bidder. When Alice discovers the identity of the thieves, the intrepid heroine, with the help of Bob Moore, her two-fisted boyfriend, desperately tries to recover the plans and torpedo before enemy countries can unleash the torpedoes against American ships. (IMDb)

Feature version of the 1951 American serial film, "Zombies of the Stratosphere".

Captain Bob Dayton and Lieutenant Ed Carey are partners in a company called "Sky Raiders" which seeks US government contracts for its inventions. Enemy spies attempt to steal, sabotage and discredit the inventions and founders of the company.

A villain named Marlof attempts to set up secret missile bases inside Canada so he can launch missiles at the U.S. The Canadian Mounted Police dispatch agents to try to stop him.