As you can tell by mid 1943, the S-boats working in the Aleutions were equiped with radar of the SJ type.
This is S-47 in 1943 as you can see her radar is there.
Also
This is S-42
and this is S-45
as you can tell they all carry SJ radar and the S-45 there is also showing SD radar
So I was wondering how can i restore radar to S-boats from mid 1943 onwards
Working on getting photos back please bear with me