Was there a central shipboard time reference for sailors to set their watches?
Short answerYes. Royal Navy ships carried clocks around the ship so the crew could work from a common time.
NotesRoyal Navy ships distributed clocks around the vessel rather than leaving sailors to rely on personal watches or the captain's stated time. Those common references mattered for coordinating watchkeeping, manoeuvres, signals, and action reports. Read beside the discussion of local time zones, the arrangement explains how a ship maintained an internal operational timeline. It also separates shipboard synchronization from the time-zone convention used in reports.