Pennant & Line is an open reference for Royal Navy destroyer classes, tracing each class through its lineage, the origins of the ship names carried by its hulls, and the association records left by the people who served under them. The work gathers material that was previously hard to find together, and it explains each entry in plain language so readers can follow how a name moved from a place or a person to a ship. Nothing here tracks live fleet deployments. The reference is a study of naming heritage, not a live tracker of where active ships stand, and it is a new, unaffiliated project that presents no affiliation to any earlier owner of this domain.

The site opens with Ship Names, where you will find the class-by-class lineage and the etymology behind each name, along with a working ship name generator that takes a class, a letter group or a couple of names and shows how a name would have been formed. Below that sits Name Memorabilia, which gathers the flags and markings that identify a destroyer class or a single ship, and walks through the letter flags, the jack and the ensigns. Crew-association records are kept alongside the class material, so a reader can move from the origin of a name to the people who served under it.