The term 'warship-related' can be summarized by the crossword solution of 'Naval'. Naval is an adjective that describes anything related to a navy, such as ships, personnel, or operations. It is derived from the Latin word 'navis', which means 'SHIP'. A navy is a branch of a nation's armed forces that is responsible for naval warfare and maritime defense. Warships are vessels that are used by navies for combat operations, and they are typically heavily armed and armored. Warship-related activities include patrolling, blockading, and engaging in naval battles.