S-a-1330 — Shipwright/diver personnel 
This file records that William Johnstone was placed on leave without pay in order to be released from naval duties and undertake service as chief shipwright and diver on the Niagara salvage operation. It includes assessments of his fitness for duty and documents the formal processing of his leave, noting that his absence would not result in disability, loss of back pay, or count towards salary increments. The material comprises a formal letter to the Secretary of the Navy (Melbourne), memoranda from the Chief Shipwright reporting on Johnstone’s condition, and internal endorsements and annotations. Acting manager’s notes and routing instructions further illustrate the administrative processes through which the matter was handled. Overall, it documents the procedural management of Johnstone’s employment status, demonstrating the coordination between naval authorities and departmental officials required to formalise and record leave arrangements within the context of wartime operational demands.