19 - 2pdr pom-pom looks impressive and a good view of the shell link. What caliber was the 2pdr, looks at least 30mm?
25 - multiple pom-pom firing and by the hands-over-the-ears of one of the crew, incredibly noisy. Standard equipment on Commonwealth ships early but were they effective (deadly)?
28 - Nice view from the 20mm gunner's ventral gondola on a FW Condor.
33 - Colour (colourized?) well known photo of USS W V sunk and burning at Pearl Harbor. The image shows the battleship to be in MS 1 (surely?).
42 - Good detail shot of a British 4.1" open gun tub. I think it's 4.1' anyway.
46 - HMS Nelson's 406mm guns are outed. News to me but not surprising.
51 - An example of Nth Atlantic sea-ice build up.
65 - Another colour (colourized) image of a 40mm gun tub on USS Missouri early, for those who wish to compare blues.