So, barring the creation of unrealistic scenarios, like the British make peace with Germany after Dunkirk, there was never going to be a situation where there was no help from the allies
Ah, but that is not the point nor the initial question. The question was "Did the Russians need Allied help for victory", not whether or not one thinks it realistic for the Russians and Germans to be going at it without the US/GBR helping the Russians.
So the only real way to get to that crucible is to have GBR and Germany make peace, and prior to Barbarossa. Anything else indicates Allied help for the Russians. Even an occupied England is help for the Russians.
As far as Russian Naval Forces at the Start of the war, I'd give the advantage to the Germans.
Battleships - 3 old Battleships for Russia, 3 New ones for Germany including the Tirpitz.
2 Pocket Battleships for the Germans
Cruisers - 7 For Russia, of which 3 were of post WW1 construction - German 2 Heavy Modern Cruisers, 6 Light Cruisers of post WW1 design, though only about 1/3 were "modern" IMO.
Destroyers - 49, 46 of post world war Vintage. I'm thinking the Germans were at about 35, but these were larger beefier destroyers that packed a heavier punch.
Maybe 175 E Boats for Germany? To 250 or so Russian Torpedo Boats.
Subs - Surprisingly, the Russians may have had a few more subs than Germany at this time, though I think it was close, and this is merely a guess but I'd think the German subs would be of better quality and/or more modern.
I think I'd have to go with the German Navy on this one. The Battleships I'd have to say are a huge advantage to the Germans, You have the Tirpitz and 2 Scharnhorst classes against pre WW1 Battleships with 12" guns and 10" armor, which was not of good quality merely due to it's age.
And if we want to add the "What if" Russian ships, including battleships, we need to add the Graf Zeppelin and the "H-Class" Battleships for Germany. I'd rather restrict it to what was actually built. Russia could not complete the Battleships in WW2 because other needs were more pressing - without Allied support, these needs would even be MORE pressing. If anyone is going to build more substantial vessels, it would be Germany, unhindered by US or British attacks on factories or more importantly, the US and Britain would not be draining resources the Germans could use against Russia.