Hi, this is a guess at the spec for a K-350 Modular: 1. Length 4.267 meters (2.438 meters pressure hull) 2. Beam 0.914 meters 3. Speed 3 knots? 4. Depth 106 meters 5. Duration 1.5 hours 6. Cost $12,000-$20,000 USD 7. Capacity 2 passengers Just for comparison to the specs currently being proposed. Ian.