Talk:HMS Vanguard (1870)

Acryonm
"Her Armament consisted of 10 × 9in (12t) MLR all in a two-tier central battery where 6 were on MD and 2 on UD."

What do MD and UD mean? It should probably be mentioned in the article to limit confusion.Aaguiar1229 (talk) 02:19, 24 January 2022 (UTC)