Australian movie industry seems to have enjoyed its involvement in a cult Finnish sci-fi satire "Iron Sky" so there's no wonder they ultimately decided to solely shoot their own 'alternate history' flick. "Blood Vessel" is a fun thrill ride fueled with nations conflict ('...and Australia? I ain't even know you people were in the war', desperately shouts Bigelow, an American cook stuck on the Nazi ship) and ancient East Europe evil (no, it's not Teplov, perhaps the finest film's character of Russian descent).
The screenplay doesn't offer much to reflect on and instead fully relies on visuals and actors. Both are indeed solid for an indie level. Nathan Phillips and Alex Cooke had some chemistry which was exteremy important when there's nothing but people talking (more often arguing, truth be told), the rest of the cast, excluding Robert Taylor's unnecessary cameo, also did their best to make their dull characters looks as alive as possible until they're dead. The aforenamed evil also lacks any signs of premise but doesn't make it a big deal when it's finally on loose. We've seen 'Nazis love occult stuff' trope for so many times that there's even no time to ask what the hell does it do here in the first place.
Summing it up, Justin Dix and Jordan Prosser had made a decent B-movie that works in its own cheap way and doesn't leave the prepared audience expecting more than "Blood Vessel" is capable to give.