The G-Force 1500 Cruise
The G-Force range is the latest to come out of the Schionning design studio. Racing versions have already taken part in various Australian regattas and are getting excellent reviews in the media. These Cats have already taken part the most prestigious Australian races and finished with three boats in the top five.
The G-Force has also attracted the attention of Multihull World Magazine.
Click on the picture to read the article.
Compare the two most important indicators for sailing ability and performance:
- Waterline length to beam ratio (an indication of hull speed potential)
- Bruce Number (the square root of the sail area divided by the cube root of the displacement, a power/weight ratio for sailing boats).
The designer has used his vast experience and good eye to incorporate these into his design and further adding a combination of; shape, draft and sail area to produce a beautiful, fast boat with good lines and speed.
When adapting the design into the cruising version, the designer managed to create enough space in the hulls to accommodate ten people and include three bathrooms without effecting the length to beam ratio to much.
Due to the increased load-carrying capacity, and the extras required for CE-certification, the cruise version is slightly heavier than the racing version, which in turn has reduced the Bruce number slightly. Despite this, it’s still much, much better vessel than any of the previous vessels we’ve sailed.
| G-Force 1500C Characteristics | |||
| LOA- Length Overall | 15,45 m | ||
| BOA- Beam Overall | 07,90 m | ||
| Draft | 00,57 m | ||
| Waterline lenght to beam ratio | 14,8:1 * | ||
| Headroom in the hulls | 2,00 m | ||
| Headroom in the cabin | 1,95 m | ||
| Mast height | 19,20 m | ||
| Max. Payload | 2000 kg | ||
| Displacement | 8000 kg | ||
| Bridge deck clearance | 0,95 m | ||
| Main Sail Area | 78 m2 | ||
| Genua Sail Area | 50 m2 | ||
| Bruce No. | 1,43 ** | ||
| Cruising Speed under sail | 10 – 16 knots | ||
| Max. Speed under sail | 20+ knots |
| * Lenght to Beam | Ratio Guide | ||
| Under 10,5 | Dog, go buy a mono | ||
| 10,5 – 11,5 | Baseline for good sailing | ||
| 11,5 – 12,5 | Moderate/high performance | ||
| 12,5 – 14,0 | High performance cruising cat | ||
| 14,0 – 20,0 | Racing cat |
| ** Bruce No. Guide | Power to weight factor | ||
| 1 | slow | ||
| 1,30 – 1,40 | Moderate performance | ||
| 1,40 – 1,50 | High performance cruising cat | ||
| 1,50 – 1,90 | Racing cat |
One of the most noticeable characteristics of Schionning designed boats is that they don’t have the tendency to nose-dive when running at higher speeds. In fact the opposite is true, the bows tend to lift up slightly reducing the risk of digging-in considerably (according to the designer, digging-in is virtually impossible).
This can be clearly seen in the film clip below.
(click on the picture to start the video)
When we arrived in Australia the G-Force 1500C was in the advanced stages of design. Some European boat yards have already shown an interest in this design, but are waiting for the drawings to be CE-approved.
We took this opportunity to buy the very first of this version; we’ll have to wait for the final CE-approvals, but we did take the opportunity to discuss our long list of wishes
The major differences between the race version and our cruise version are:
- Both stern cabins have a spacious double bed.
- Each hull is equipped with a spacious toilet/shower.
- The starboard bow cabin is for the owner and is equipped with a separate shower and toilet.
- In the port bow there are two spacious cabins with double beds.
- Sheltered helm in the cockpit with sliding hatch for good all-round visibility.
- A rounded sitting area in the cockpit allowing space for a cosy dining area.
- A higher payload.
- The structure fore has a more modern look.
3D view of the exterior.
Click on the play button below.
3D view of the interior.
Click on the play button below.