"Standard" Oceanic frieghters

[Kaiser Kirk]

This is intended to be an example of the larger commercial freighters in common service.
There are of course smaller ships, or faster ships, this is simply so if / when this sort of thing comes up, we can go back to this as a reference point

I started with the "Hog Island A" design and converted to metric.
Browsing the web, the 8 knots is I think the right cruise speed, and I saw some indication that it should have a max speed of 11 knots, with the "B"-troop transport being 15knots.
Since this will mostly come into play for Deployment points, and resupply questions, the higher max speed seems relevant.

So this is a Cargo/Liner version of the largest type of Oceanic Freighter found in the N7 Oceans.
A more common version would be the Cargo/Tanker version at 11knots.

Both are typical designs subsidized by governments for inclusion in wartime merchant marines.

The most common oceanic freighters are smaller, and coastal freighters are much smaller.



Questions/Comments/Concerns ?

Quistconck, Marcantile Marine Large Oceanic Freighter laid down 1899

Displacement:
   8,500 t light; 8,678 t standard; 8,892 t normal; 9,062 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (407.44 ft / 400.26 ft) x 53.81 ft x (24.25 / 24.63 ft)
   (124.19 m / 122.00 m) x 16.40 m  x (7.39 / 7.51 m)

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 649 ihp / 484 Kw = 8.00 kts
   Range 4,150nm at 8.00 kts
   Bunker at max displacement = 384 tons (100% coal)

Complement:
   457 - 595

Cost:
   £0.312 million / $1.248 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Machinery: 103 tons, 1.2 %
   Hull, fittings & equipment: 1,947 tons, 21.9 %
   Fuel, ammunition & stores: 391 tons, 4.4 %
   Miscellaneous weights: 6,450 tons, 72.5 %
      - Hull below water: 3,000 tons
      - Hull void weights: 240 tons
      - Hull above water: 2,000 tons
      - On freeboard deck: 1,200 tons
      - Above deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,511 lbs / 5,221 Kg = 106.6 x 6 " / 152 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 2.8 ft / 0.9 m
   Roll period: 13.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.00
   Seaboat quality  (Average = 1.00): 1.85

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck ,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0.596 / 0.598
   Length to Beam Ratio: 7.44 : 1
   'Natural speed' for length: 20.01 kts
   Power going to wave formation at top speed: 12 %
   Trim (Max stability = 0, Max steadiness = 100): 27
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  22.11 ft / 6.74 m,  18.83 ft / 5.74 m
      - Forward deck:   30.00 %,  10.83 ft / 3.30 m,  10.83 ft / 3.30 m
      - Aft deck:   20.00 %,  10.83 ft / 3.30 m,  10.83 ft / 3.30 m
      - Quarter deck:   25.00 %,  18.83 ft / 5.74 m,  18.83 ft / 5.74 m
      - Average freeboard:      15.16 ft / 4.62 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 65.6 %
      - Above water (accommodation/working, high = better): 70.8 %
   Waterplane Area: 15,693 Square feet or 1,458 Square metres
   Displacement factor (Displacement / loading): 134 %
   Structure weight / hull surface area: 76 lbs/sq ft or 373 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.04
      - Longitudinal: 1.79
      - Overall: 1.10
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Excellent seaboat, comfortable, rides out heavy weather easily

[maddox]

Tastes like Liberty

[Kaiser Kirk]

It's modeled on a WWI "Hog Island" B transport.

The A's were pure cargo and seem to have been 11knot vessels. - I expect them to be more common.

I expect this to be the upper size of freighter plying the seas.

I should probably make a "Common"  and "Coastal".

Hmm, I should probably also put that comment about "A" in the SS above.