J.
Inspector of Machinery puis 05/12/91 Chief Inspector of Machinery Charles Malcolm Johnson (-06/02/1916).
31/08/03 Rear Admiral (Retraite) puis 01/06/07 Vice Admiral (Retraite) Samuel Arthur Johnson (-26/06/1915)
01/01/99 Rear Admiral (Retraite) puis 30/08/03 Vice Admiral (Retraite) Charles Johnston.
10/08/00 Rear Admiral (Retraite) puis 24/02/05 Vice Admiral (Retraite) John George Jones.