Here are some facts and figures about the Ligure 50 power catamaran
| Vessel name | Blue Platypus OR PlatypuSea – yet to be decided! |
Was Saravai III, was Jnet |
| Builder | ProMeta, France | |
| Designer | Michel Joubert, France, imagined with Joseph Fricaud, France | |
| Built | 1998 | Was built as the first of a new class to compete with the new (at the time) Foutaine Pajot Maryland 37, Jeantot Transcat 445, and Catana World Class 46 |
| Construction | Aluminium | 12mm hulls, 6mm deck, using the proprietary Strongall® method |
| LOA | 15.08m / 49’6″ | Note that as-built she was 14.95m / 49’1″ |
| LWL | 14.65m / 48’1″ | About 0.4m / 1′ less than overall |
| BOA | 4.88m / 16′ | Under the Freycinet size for most French canals |
| BWL | 1.19m / 3’11” | As measured at half wet load (fuel & water). |
| Draft | 1.15m / 3’9″ | As measured at half wet load (fuel & water) in salt water; 1.18m in fresh water. Dry she would be 1.10m. |
| L/B ratio | 12.3 : 1 | |
| Est. TPC | 0.30 tonnes/cm | Tonnes per cm immersion |
| D/L ratio | 130.4 | See this |
| Maximum S/L ratio | 1.81 | See this |
| Hull speed theory at max. S/L ratio | 12.7kn | |
| Hull speed theory 1.34 | 9.3kn | |
| Est. Displacement at marks | 16.5 tonne (36,500lb) dry 20 tonne wet (fuel & water) |
|
| Air height to top of radar | 6.1m / 20’1″ | Measured at half wet load (fuel and water) |
| Air height to top of flybridge control panel | 4.2m / 13’9″ | Measured at half wet load (fuel and water), if targa removed |
| Water capacity | 500L (2 x 250L) / 132g | |
| Fuel capacity | 2,360L (980L, 980L, 400L) / 622g + soft tanks 2,500L (1,000L, 750L, 750L) / 658g = 4,860L / 1279g |
All diesel and water storage is under the bridgedeck. |
| Range | 1,840nm @ 6kn 864nm @ 11knWith extra tankage already available on the boat: 3,650nm @ 6kn 1730nm @ 11kn |
Includes 10% buffer |
| Engines | 2 x 135hp Perkins with Hurth 450A2 gearbox |
Naturally aspirated; limited to 2400rpm; 2.03:1 gearbox |
| Propellers | 2 x 4 blade France Helice 22″ x 18″ |
37mm shaft; 65% efficient propellers |
| Generator | Onan 6.5kW | 1500rpm |
Blue Nomads 