The Stromberg Shipping Line was one of the richest shipping companies known for many commodities in transporting oil and cargo for profit, even responsible for building the second largest super-tanker in the world known as the Liparus.
However, it wasn't the case when Stromberg formulated a plot to instigate a global war. To do so, he would have to steal two nuclear submarines (one from the British and the other from the Soviets) and that he would have them fire their nuclear missiles at New York City and Moscow to start the war, so that the Shipping Line can start a new underwater civilization as shown with Stromberg's underwater called Atlantis.
Stromberg starts off by having Professor Markovitz and Dr. Bechmann to build a submarine tracking system to hijack submarines, even having the Liparus' bow to be built as bow doors so that the ship can engulf them in custody. Despite getting the nuclear submarines in possession, Stromberg learns that one of his assistants sold the info of the submarine tracking system in a microfilm and has her fed to a shark before ordering Jaws and Sandor to recover the microfilm and cover their tracks.
Despite their efforts, British agent James Bond and Russian agent Anya Amasova were able to recover the microfilm, resulting Sandor's death. However, Stromberg was able to capture them along with an American submarine in the Liparus, revealing his true plan to them. As Stromberg gets several of his crewmembers to board the first two submarines to initiate their plan, he leaves back to Atlantis, taking a captive Amasova with him. However, Bond escapes and frees the captives, taking down the Liparus Captain and his crew before getting the submarines to fire and destroy each other in order to foil Stromberg's plan.
After the American, British and Soviet sailors escape from the sinking Liparus, Bond heads over back to Atlantis to rescue Amasova, killing Stromberg in the process. As Bond and Amasova escape, the Americans fired torpedoes at Atlantis, sinking it down to the bottom of the sea. It can be implied that the Stromberg Shipping Line is shut down afterwards.