Sea container locks

Without shipping, people all over the world would not be able to enjoy the goods that are today considered to be generally available. Thanks to the development of science and technology, sea freight is no longer a challenge as it was several dozen years ago. However, this does not change the fact that during a long journey, which is undoubtedly sea transport, the goods are not 100% safe. How will I change it? What to do to ensure that the cargo arrives intact (and in full)? Bet on additional container security.