A ship plan can look like several vessels laid over one another. Begin by identifying one labelled view and following it consistently; trying to understand every line at once usually makes the drawing harder to read.
The Royal Museums Greenwich collection portal includes ship plans alongside other maritime material. When studying a digitised drawing, retain its catalogue record rather than saving only an image with no title or reference.
Trace one level at a time
Choose a deck explicitly named on the sheet. Locate the bow and stern from the drawing’s labels, then trace the outside boundary of that view. Copy three labelled spaces into a simple sketch in the same order. Mark anything unreadable as unreadable instead of filling it from memory of a similar vessel.
Next, inspect the legend and scale if present. A symbol repeated across the deck may have a particular drafting meaning; resemblance to a modern furnishing is not enough to identify it. Distinguish printed labels from later handwritten annotations.
Finish with one question that requires another view, such as how a staircase relates to the deck above. The drawing has now given you a reason to move elsewhere on the sheet. This is an exercise in reading a historical document, not a basis for modifying or navigating a real vessel.
Image: an editorial illustration, not a documentary photograph.