Ingénieur Elie Monnier, French Hydrographic Ship laid down 1943
Displacement:
200 t light; 205 t standard; 264 t normal; 311 t full load
Dimensions: Length overall / water x beam x draught
113.98 ft / 111.55 ft x 22.97 ft x 6.56 ft (normal load)
34.74 m / 34.00 m x 7.00 m x 2.00 m
Machinery:
Diesel Internal combustion motors,
Geared drive, 1 shaft, 383 shp / 286 Kw = 12.00 kts
Range 6,000nm at 12.00 kts
Bunker at max displacement = 106 tons
Complement:
32 - 42
Cost:
£0.055 million / $0.219 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 10 tons, 3.7 %
Hull, fittings & equipment: 115 tons, 43.5 %
Fuel, ammunition & stores: 64 tons, 24.3 %
Miscellaneous weights: 75 tons, 28.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
699 lbs / 317 Kg = 6.5 x 6 " / 152 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.7 ft / 0.2 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.50
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.550
Length to Beam Ratio: 4.86 : 1
'Natural speed' for length: 10.56 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 41
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13.78 ft / 4.20 m
- Forecastle (20 %): 10.66 ft / 3.25 m (6.56 ft / 2.00 m aft of break)
- Mid (50 %): 6.56 ft / 2.00 m
- Quarterdeck (15 %): 6.56 ft / 2.00 m
- Stern: 6.56 ft / 2.00 m
- Average freeboard: 7.63 ft / 2.33 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 44.3 %
- Above water (accommodation/working, high = better): 67.7 %
Waterplane Area: 1,734 Square feet or 161 Square metres
Displacement factor (Displacement / loading): 279 %
Structure weight / hull surface area: 42 lbs/sq ft or 206 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.44
- Longitudinal: 5.99
- Overall: 1.66
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Good seaboat, rides out heavy weather easily
Notes:
Light hydrographic ship. Can be used for maritime surveying, tending research craft, and sonar testing. This ships is manned by a predominantly civilian crew with French Navy officers.
Breakdown of Miscellaneous Weights:
- 2 tons for DRBN-1 navigational surface and air search radar
- 8 tons for high test crane and winch
- 65 tons for cargo, passengers, and gear
Ships in Class:
-
Ingénieur Elie Monnier