February 11, 2010
The PH8 is an oceangoing, aluminum catamaran capable of crossing the Atlantic. A comfortable, safe passagemaker in the Robert P. Beebe spirit.
The perfect cruising passagemaker for a couple.
Designed by the late Malcolm Tennant, New Zealand, a world renowned catamaran designer
for over thirty years and Alan Walker, a shipbuilding engineer specialized in aluminum boats.
Registered in London, UK, under the Small Ship Registry (SSR) rules.
| Registration number | SSR 120467 |
| Hull ID | IT-PHZ54001B406 |
| Radio call sign | MLXZ7 |
Maximum number of souls on board 12. Each must have its own PFD in an accessible place.
| LOA | 16.50 m | 54'2 |
| LWL | 15.17 m | 49'8 |
| Beam | 6.78 m | 22'3 |
| Hull Beam | 1.14 m | 3'9 |
| Draft | 1.42 m | 4'8 |
| Total Clearance | 6.15 m | 20'2 |
| Maximum displacement | 30,000 kg | 66,000 lbs |
| Power | Two Cummins 270 hp (198 kW) diesels |
| Fuel capacity | 6,482 liters | 1,715 US gals |
| Water capacity | 1,292 liters | 342 US gals |
| Hull speed = (sqr 49.64) x 1.34 | 9.4 knots |
The following fuel consumption data were measured in the Summer 2009 with the flow meters, with the cat fully equipped for cruising and calm sea.
| 10 knots | Both engines at 1800 RPM | 26 l/hr | 0.38 miles/l | 6.9 USG/hr | 1.44 miles/USG | range 2493 miles |
| 16 knots | Both engines at 2600 RPM (max) | 80 l/hr | 0.20 miles/l | 21 USG/hr | 0.76 miles/USG | range 1296 miles |
Be aware that the fuel consumption data that follows and the ones contained
in Test Runs and Fuel
Consumptions were measured in November 2006, when the total weight of the cat was app. only 18,500 kg.
At the present time I do not plan to do more test runs since it is a very tedious and boring undertaking.
The hydrostatic data is per hull.
Baseline Draft: 1.300
Trim: zero
Heel: zero
DIMENSIONS
Length Overall: 15.458 m LWL: 15.238 m Beam: 1.140 m BWL: 1.129 m
Volume: 14.510 m
Displacement: 14.873 MT
COEFFICIENTS
Prismatic: 0.736 Block: 0.649 Midship: 0.881 Waterplane: 0.883
RATIOS
Length/Beam: 13.560 Displacement/length: 117.149 Beam/Depth: 0.877
MT/ cm Immersion: 0.156
AREAS
Waterplane: 15.193 m2 Wetted Surface: 45.139 m2
Under Water Lateral Plane: 18.088 m2 Above Water Lateral Plane: 7.641 m2
CENTROIDS (Meters)
Buoyancy: LCB = 7.594 fwd
Under Water LP: 7.970 fwd of Origin, 0.628 below waterline.
Arimar model 360 Top Line.
| Registration Number | Tender To PH8 |
| Hull ID | IT-ARI62586D910 |
Maximum number of souls on board ?.
| LOA | 3.60 m | |
| Beam | 1.53 m | |
| Weight | 32 kg | |
| Maximum working power | 4 kW | |
| Design category | C | |
| Maximum load | 315 kg | |
| Maximum number of people | 3 |
| Power | Honda 8F5A-8AD6 |
| Fuel capacity | liters | US gals |
| Fuel consumption | 2.15 l/h | US gals/hr |
| 9.4 knots |