Polar exploration vessel
Adventure, Atlantis polar exploration vessel laid down 1928
Displacement:
16,393 t light; 16,905 t standard; 24,139 t normal; 29,927 t full load
Dimensions: Length overall / water x beam x draught
557.74 ft / 557.74 ft x 98.43 ft x 22.97 ft (normal load)
170.00 m / 170.00 m x 30.00 m x 7.00 m
Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 67.11lbs / 30.44kg shells, 1928 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
4 - 3.00" / 76.2 mm guns (2x2 guns), 13.50lbs / 6.12kg shells, 1928 Model
Breech loading guns in deck mounts
on side, all amidships
8 - 0.79" / 20.1 mm guns (4x2 guns), 0.25lbs / 0.11kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 324 lbs / 147 kg
Shells per gun, main battery: 150
Aviation: 4 sea/Ski planes, 2 catapults
Cargo: 5200 tons reserved for cargo and accomodations for scientific personnel
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 328.00 ft / 99.97 m 9.84 ft / 3.00 m
Ends: 3.94" / 100 mm 164.00 ft / 49.99 m 9.84 ft / 3.00 m
65.74 ft / 20.04 m Unarmoured ends
Main Belt covers 90 % of normal length
- Torpedo Bulkhead:
3.94" / 100 mm 328.00 ft / 99.97 m 19.69 ft / 6.00 m
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 27,329 shp / 20,387 Kw = 20.00 kts
Range 15,000nm at 20.00 kts
Bunker at max displacement = 13,022 tons
Complement:
967 - 1,258
Cost:
£2.776 million / $11.102 million
Distribution of weights at normal displacement:
Armament: 41 tons, 0.2 %
Armour: 1,468 tons, 6.1 %
- Belts: 526 tons, 2.2 %
- Torpedo bulkhead: 941 tons, 3.9 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 851 tons, 3.5 %
Hull, fittings & equipment: 8,834 tons, 36.6 %
Fuel, ammunition & stores: 7,746 tons, 32.1 %
Miscellaneous weights: 5,200 tons, 21.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
71,280 lbs / 32,332 Kg = 1,062.1 x 5.1 " / 130 mm shells or 18.7 torpedoes
Stability (Unstable if below 1.00): 1.44
Metacentric height 9.2 ft / 2.8 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.53
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.670
Length to Beam Ratio: 5.67 : 1
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 44 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.00 ft / 8.84 m
- Forecastle (20 %): 21.00 ft / 6.40 m
- Mid (50 %): 21.00 ft / 6.40 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 17.70 ft / 5.39 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 47.1 %
- Above water (accommodation/working, high = better): 141.4 %
Waterplane Area: 42,830 Square feet or 3,979 Square metres
Displacement factor (Displacement / loading): 278 %
Structure weight / hull surface area: 163 lbs/sq ft or 798 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.54
- Longitudinal: 1.61
- Overall: 1.55
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
This design is a result of colaberation between Atlantis and Russia