Even ignoring the Thunderbirds affiliation, this episode was good solid classic hard science fiction -- with an engineering troubleshooting plot more Hugo Gernsback than John W. Campbell Jr.. One valuable technical lesson of which Gernsback would have approved was the importance of Reading The Fine Manual. I didn't catch any howlers in the science and astrogation, though presumably one of the scene transitions covered a lot more time than it suggested. The drama and characterization were well-handled for this genre, and Richard Ridings does a good Jeremy Clarkson version of a chief engineer, especially when giving driving instructions.
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