What happened to Captain H. J. Haddock?

[Steven Christian]

This is his fleet.
British Dummy Battleships
Also they tried it again during WW2 on a smaller scale.
Ahoy - Mac's Web Log - Dummy Wooden Battleships in WW2

 

[Dave Gittins]

The last I heard of Captain Haddock he was playing a bit part in Tintin!

 

[Mark Baber]

Indeed, but that seems to have been his brother Archibald.

Captain Haddock of Olympic

TINTIN / Un nouveau livre à propos d'Archibald Haddock.