Here I present the obliterated stamps I (hope to) acquire of this series issued by the Maltese post in 2012.
More about this series can be found here and here.
About the historic context one can find out more here and here.
H.M.S. Hythe :
H.M.S. Speedy - H.M.S. Vidette - M.V. Port Chalmers :
H.M.S. Caïro - M.V. Clan Fergusson - H.M.S. Derwent :