Not to make a commercial plug, but the recent new German-language version of the classic Raven/Roberts
British Battleships of World War Two--perhaps the best work ever published of its type--is available at very reasonable prices.
While not specific to the 1941
Repulse, another fine publication is
Ensign 8-Renown and Repulse by Maurice Northcott (whom, by the way, also authored the superb
Ensign 7 Hood).
Profile Morskie #4 is based on the 1941
Repulse, although it has certain inaccuracies as many of that series do, and may be available at less cost.
With the tunnel-visioned commercial model market having produced 1941 versions of
Repulse in a variety of scales, including the new Tamiya release, there should be little difficulty gathering the salient details for your planned project.

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Danny DON'T "waterline"...!