What is a Senior Officer Present Afloat?

Introduction Senior Officer Present Afloat, usually referred to as SOPA, is a US Navy term to indicate the US Navy officer, with the highest ranking by rank, or number in rank, present in a harbour occupied by more than one US Navy vessel. That officer is essentially commander of all US Navy operations afloat in… Read More


What is an Officer in Tactical Command?

Introduction In NATO, the officer in tactical command (OTC) is the naval officer exercising tactical command of a group of ships in a tactical formation such as a task unit, task group, or task force. Outline Ships travelling together on a specific mission might have one of the commanding officers designated OTC. On occasion, an… Read More