These ships were designed with especially shallow draft: 13ft 6in in Roberts, as opposed to 34ft 10in in Vanguard. There are only two deck levels below the bottom edge of the barbette cylinder; one has the powder rooms, and one has the shell rooms. There's a superb book on the big-gun monitors called...Big Gun Monitors. It's written by Buxton, and a revised edition came out just a year ago.
Ah, I'm very pleased with myself. I figured out how to post a photo and everything. Isn't that crazy? Check it out. Depending on the ship's load level, those "spats" served as work space and docking area. The photo is from the old edition of Buxton's Big Gun Monitor.
I dunno why. Since that was the photo Tiornu mentioned. and the name on the back of the ship are the same. LOL
M 1-4 were renamed after American generals early on in their existence, presumably in recognition of their US-made guns. However, since the US was neutral at the time, this caused a ruckus, and all were renamed again. General Grant became Havelock about a month before commissioning.
Correct The Guns and Turrets from the Greek Salamis building in Germany and acquired from their US builders Bethleheim Steel- due to the blockade. Seemed a good idea to use U.S notables from the Civil War, then the realisation that the USA was a neutral power! Seems to have been going for the name record, Originally the Styx class then plain M1-4 M2 became Ulysses S. Grant then General Grant then Lord Havelock and finally plain Havelock. The others were M1 -Admiral Farragut M2. General Grant, M3 General Lee and M4 General (Stonewall) Jackson