The Cluecraft 3000 is an experimental submarine invented by Alistair Oh. It was used in Beyond the Grave to explore the sunken city. It appears to have faults.
In The Black Book of Buried Secrets it is revealed that the Ekaterina's invented it and it is the only submarine in the world which can withstand 30,000 cusec's of water.Although it's purpose was to find an lost Tomas clue.
Card[]
The Cluecraft 3000's card is Card 102, which shows its blueprints.