Military Salute

Yes, that captain (I don't know his rank) is giving you a military salute, isn't he?
Today, the King of Spain (Felipe VI) has come to Cartagena for the centenary of the first Spanish Navy submarine warfare (1915). Although, some years before, in 1888, was built the first submarine including torpedo (all history in a previous post, here). Now, the 1888 submarine is exhibited at Naval Museum (click here for a previous post)