Where torpedo boats stop being small craft

What is the upper size limit for a PT or torpedo boat?

About 500 tons, although the exact boundary depends on whether the question uses a treaty or general classification.

The question initially leaves open whether PT means patrol torpedo boats or poodle treats. Once interpreted as a warship question, the panel gives roughly 500 tons as the upper limit normally associated with torpedo boats. It also asks whether the intended limit is specifically a treaty definition, because classification depends on context. These small-combatant categories reflect conventions with differing purposes, rather than sharp engineering boundaries.