Merchant Navy or Royal Navy: How Do I Tell?

Where should you start looking?

Tell them apart by the record: Royal Navy service sits in a naval service record, while merchant service sits in discharge books and crew agreements. A person could serve in both at different times, so keep each period separate.

If you cannot fix the unit or the dates, fix what you can and search on that, rather than guessing the missing filter to make the search feel complete. Start from the person, not from the record type, and fix name, number, unit and dates as firmly as you can before you open anything. A record that names the right person in the wrong unit, or the right unit on the wrong dates, is a lead, not a match.

Reading what the record actually says

A summary written later is a different kind of evidence from a record written at the time, and the two should never be quoted as if they were one document. An entry that names a place but no unit, or a unit but no date, is a partial clue. Use it to frame the next search, not to close the question. A medical entry, a pay entry, or a disciplinary entry should not be read as a character judgement. These are administrative categories, and they record process, not personality.

Dead ends to expect here

When a record set ends before your dates, or begins after them, the problem is coverage, and no variation of search terms will fix a coverage problem. When two sources disagree and neither can be preferred, keep both in the timeline with a note. A forced choice now will mislead every later step. Where a record set is arranged by unit rather than by surname, a surname search alone will miss it. Mirror the catalogue structure, and the record set opens up.

Working through it in order

If a step produces nothing, record that nothing. A documented negative result is part of the research, and it stops the same step being repeated blindly. A useful habit is to write the question at the top of your notes before each step, and the answer, with its reference, underneath it when the step ends.

1. Fix the seaman identity details, name and any discharge number, before opening ship records.
2. Use the discharge book to list ships and voyages in date order.
3. Open the crew agreement for each ship and voyage, and note its reference.
4. Test every ship movement against the discharge book before adding it to the timeline.

What should you check next?

Let the dates decide the direction. The next record should cover the dates the timeline is weakest on, not the dates it already covers well. A session that ends with three referenced facts and one named next step has succeeded, even if the story feels shorter than you hoped.

Keep the person, the number and the dates together as you move to the next record, and re-check them on arrival. Filters drift when they are carried in memory. The next record should answer a question this one raised, not repeat what you already know.