The series was filmed in a converted elementary school in Halifax's North End. A team of model builders constructed the characters in a workshop adjacent to the large set located in a water-filled former gymnasium. The radio controlled models were driven by propellers, but used underwater wheels to provide guidance and avoid drifting out of shots.
The original models used to film the series can now be seen on a permanent display in Halifax at Maritime Museum of the Atlantic.
Some that were owned by Fred Allen were offerd for sale on ebay, but they were later donated to the Museum by Charlotte Allen, Fred Allen's wife.