Continuity mistake: Before telling the viewers about his 'most unusual experience', Troy is seen in his dressing gown and he is unshaven. But when the flashback footage of 'Raptures of the Deep' ends, Troy is seen in his WASP uniform and he is now clean-shaven.
Continuity mistake: After Troy finishes talking to Phones about if the ice is a trick, we cut to a shot of Stingray trapped in the ice. Later on in the episode, when Phones pulls the gear lever in an attempt to move Stingray from the ice, he says, "We're iced up!" and we cut to the same shot of Stingray trapped in the ice as before.