Could the Echo-class survey ships have been placed in reserve?
Short answerYes, but only if the Navy also maintained the specialist crews needed for survey work and a wartime role such as deploying uncrewed systems.
NotesThe survey ships could have been retained, but their value cannot be assessed from hull availability alone. Hydrographic work requires specialist crews, so the reserve system would also have to preserve and exercise that personnel pool. Wartime demand for surveys could justify the expense, especially because Echo-class hulls could deploy uncrewed survey systems. The answer demonstrates why reserve planning must match each specialist platform with a credible mission and mobilization workforce.