Which type of naval ships typically operate in open ocean environments?

The ships that typically operate in open ocean environments are classified as support type ships. These vessels are specifically designed and equipped to handle a wide array of operations in deep water, including logistics, replenishment, and providing maintenance for fleet units. Support type ships include aircraft carriers, supply ships, and amphibious assault ships, which play critical roles in projecting naval power and ensuring uninterrupted operations away from shore.

In contrast, training ships are primarily focused on educating personnel and conducting operational training, while patrol boats are designed for coastal missions, including law enforcement and customs duties in shallower waters. Riverine vessels are specialized for operations in rivers, lakes, and other inland waterways, making them unsuitable for the open ocean. These distinctions demonstrate why support type ships are the right choice for open ocean operations.