Generic Merchant Vessels

Started by P3D, January 26, 2008, 04:47:36 PM

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P3D

I decided to design some 'generic' ships. Used SS3 so I would get a deep draught figure, SS2 won't differ too much.

The ship is 1484GT, 1000NRT and 2000dwt. GRT is calculated by L x B x D x BC + WA x AF (waterplane area and average freeboard). I assumed a 0.7 ratio of NRT and GRT. I increased range to get cargo capacity.

Fiddled with the values until I got something that fits in a lvl 0 dock and is close to ships here:
http://www.mariners-l.co.uk/WWlStandardShipTypes.htm

This ship cost 0.125BP if anyone wants to build such.

Coastal tramp steamer, laid down 1909

Displacement:
   500 t light; 533 t standard; 1,647 t normal; 2,538 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (226.00 ft / 226.00 ft) x 35.00 ft x (10.00 / 14.81 ft)
   (68.88 m / 68.88 m) x 10.67 m  x (3.05 / 4.51 m)

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 353 ihp / 263 Kw = 9.00 kts
   Range 62,200nm at 7.00 kts
   Bunker at max displacement = 2,005 tons (100% coal)

Complement:
   129 - 168

Cost:
   £0.021 million / $0.085 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Machinery: 27 tons, 1.6 %
   Hull, fittings & equipment: 448 tons, 27.2 %
   Fuel, ammunition & stores: 1,147 tons, 69.6 %
   Miscellaneous weights: 25 tons, 1.5 %
      - Hull above water: 10 tons
      - On freeboard deck: 15 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     35,591 lbs / 16,144 Kg = 329.5 x 6 " / 152 mm shells or 18.8 torpedoes
   Stability (Unstable if below 1.00): 1.83
   Metacentric height 2.7 ft / 0.8 m
   Roll period: 8.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.729 / 0.758
   Length to Beam Ratio: 6.46 : 1
   'Natural speed' for length: 15.03 kts
   Power going to wave formation at top speed: 26 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Forward deck:   30.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Aft deck:   30.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Quarter deck:   20.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Average freeboard:      14.00 ft / 4.27 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 8.0 %
      - Above water (accommodation/working, high = better): 134.1 %
   Waterplane Area: 6,486 Square feet or 603 Square metres
   Displacement factor (Displacement / loading): 1,000 %
   Structure weight / hull surface area: 42 lbs/sq ft or 207 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.88
      - Longitudinal: 3.25
      - Overall: 1.00
   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, rides out heavy weather easily
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

#1
3000NRT/4400GT/5800dwt ship.

Ocean Cargo steamer laid down 1909

Displacement:
   1,600 t light; 1,697 t standard; 4,863 t normal; 7,396 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (380.00 ft / 380.00 ft) x 50.00 ft x (13.00 / 18.93 ft)
   (115.82 m / 115.82 m) x 15.24 m  x (3.96 / 5.77 m)

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 2,306 ihp / 1,720 Kw = 13.00 kts
   Range 51,000nm at 9.00 kts
   Bunker at max displacement = 5,699 tons (100% coal)

Complement:
   290 - 378

Cost:
   £0.081 million / $0.323 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Machinery: 177 tons, 3.6 %
   Hull, fittings & equipment: 1,364 tons, 28.1 %
   Fuel, ammunition & stores: 3,263 tons, 67.1 %
   Miscellaneous weights: 58 tons, 1.2 %
      - Hull below water: 18 tons
      - Hull above water: 20 tons
      - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     57,018 lbs / 25,863 Kg = 527.9 x 6 " / 152 mm shells or 13.5 torpedoes
   Stability (Unstable if below 1.00): 1.90
   Metacentric height 5.0 ft / 1.5 m
   Roll period: 9.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.689 / 0.720
   Length to Beam Ratio: 7.60 : 1
   'Natural speed' for length: 19.49 kts
   Power going to wave formation at top speed: 28 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Forward deck:   30.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Aft deck:   30.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Quarter deck:   20.00 %,  17.00 ft / 5.18 m,  17.00 ft / 5.18 m
      - Average freeboard:      17.00 ft / 5.18 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 14.6 %
      - Above water (accommodation/working, high = better): 167.0 %
   Waterplane Area: 14,957 Square feet or 1,390 Square metres
   Displacement factor (Displacement / loading): 1,000 %
   Structure weight / hull surface area: 62 lbs/sq ft or 301 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.52
      - Overall: 1.00
   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, rides out heavy weather easily
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas