Soren
It seems to be useless to repeat but one more go
Quote: "There's a reason so many Uboats successfully operated near and in the Vilkitsky strait, not a single one lost to crashing into an iceberg."
If you understand something on sailing you know that freely floating icebergs are not a problem if they can be seen, one can always dodge them, real problems began when the floating "flat" ice is bagged together without enough open water between floating mass, in these circumstances icebergs could be hazard to U-boats because there might be them among "flat" ice and in shallow water their under surface parts may even went down to the sea floor.
You seemed to miss from
Vladimir Kroupnik. The "Komet" raider the fact that Komet found the going E of Vilkitsky strait harder than W of it or in the strait itself. And worst part of Komet passage was that of through East Siberian Sea. That was even worse than the area E of the Vilkitsky strait. So navigating W of or in the strait doesn't prove that one can do it E of the strait.
And quote from your message #307 :"
During an exceptionally mild-ice summer, three Type VIIC U-boats, U-302 (Sickel),
U-354 (Herbschleb), and U-711 (Lange) of Group Viking of the 13th U-boat Flotilla, based at Trondheim, Norway,on patrol in theKara Sea during late August
1943 trailed a Soviet convoy into the Vilkitsky Strait. U-301 and U-354 sub-
sequently sank one ship each of the small convoy. A month later,U-302, U-354, and U-601 (Grau) of this same group returned to patrol the western entrance of
these straits in hopes of intercepting another convoy. During the following
summer of a much less favorable ice year, three more Type VIIC U-boats of Group
Gryphon of the 13th Flotilla, U-711 (Lange), U-739 (Mangold), and U-957 (Schaar),
succeeded in reaching Cape Chelyuskin on 18 September 1944 while attempting to
reach an assembly point for Soviet coastal convoys at Nordwik Bight to the east
of Chelyuskin. Only heavy drift ice prevented them from going farther."
So summer 43 was exceptional and in 44 the U-boats got to Cape Chelyuskin but were then stopped by drift ice. So 2 more points
1) in 44 it was possible to went into the Vilkitsky strait but not further, again, as during the Komet's passage real problems began E of the Vilkitsky strait or at the eastern end of it. So both times when German ships went through the Vilkitsky strait they found situation worse on the eastern side, contrary your claim.
2) in 44 U-boats were stopped by drift ice not by icebergs
Juha