New Gran Colombian Ships for 1917

[Desertfox]

How about a retractable canvas hangar?

[Korpen]

How about a retractable canvas hangar?

Would that not on the other hand go against the purpose of the hangar; to shelter and protect the blimps from strong winds and other weather conditions?

[mentat]

Is it too early for a catamaran twin hull - well ballasted and with fin stabilisers ;D

[The Rock Doctor]

It probably would be, and there's the problem of correctly simming it in SS.

[The Rock Doctor]

On a more practical note, the Matadi class sloops are a larger cousin to the recent Puyo class sloops, and will be found escorting fleet auxiliaries and civilian convoys.  The class has been designed with an older generation of machinery to allow orders to be placed with overseas yards - in this case, Romania has been contracted to construct at least two.

Though the type is as large as an S class destroyer, and almost as heavily armed, it trades speed for seakeeping and the hull strength necessary for a long career on the open ocean.



Enter ship name, Enter country Enter ship type laid down 1916 (Engine 1909)

Displacement:
   984 t light; 1,028 t standard; 1,283 t normal; 1,486 t full load

Dimensions: Length overall / water x beam x draught
   266.30 ft / 262.14 ft x 31.17 ft x 10.99 ft (normal load)
   81.17 m / 79.90 m x 9.50 m  x 3.35 m

Armament:
     4 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
     1 - 2.56" / 65.0 mm guns in single mounts, 8.38lbs / 3.80kg shells, 1916 Model
     Anti-aircraft gun in deck mount
     on centreline amidships, 1 raised gun
     2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1916 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 130 lbs / 59 kg
   Shells per gun, main battery: 250
   4 - 21.0" / 533 mm above water torpedoes

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm   0.39" / 10 mm            -
   2nd:   0.98" / 25 mm         -               -
   3rd:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 8,000 shp / 5,968 Kw = 22.36 kts
   Range 10,000nm at 10.00 kts (Bunkerage = 458 tons)

Complement:
   106 - 139

Cost:
   £0.162 million / $0.648 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.3 %
   Armour: 7 tons, 0.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 7 tons, 0.6 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 364 tons, 28.3 %
   Hull, fittings & equipment: 533 tons, 41.5 %
   Fuel, ammunition & stores: 299 tons, 23.3 %
   Miscellaneous weights: 64 tons, 5.0 %
-25 t:  Long range wireless
-25 t:  Escort group command facilities
-6 t:  Torpedoes
-4 t:  Twelve depth charges
-4 t :  Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,766 lbs / 801 Kg = 57.9 x 3.9 " / 100 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.27
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 11.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.20
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.500
   Length to Beam Ratio: 8.41 : 1
   'Natural speed' for length: 16.19 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      23.62 ft / 7.20 m
      - Forecastle (20 %):   19.69 ft / 6.00 m
      - Mid (50 %):      19.69 ft / 6.00 m (11.81 ft / 3.60 m aft of break)
      - Quarterdeck (15 %):   11.81 ft / 3.60 m
      - Stern:      11.81 ft / 3.60 m
      - Average freeboard:   16.06 ft / 4.90 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108.1 %
      - Above water (accommodation/working, high = better): 100.2 %
   Waterplane Area: 5,444 Square feet or 506 Square metres
   Displacement factor (Displacement / loading): 138 %
   Structure weight / hull surface area: 43 lbs/sq ft or 212 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.81
      - Longitudinal: 6.55
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[TexanCowboy]

Well, can't protest, I'm building them.  :). On a more practical note, how about adding a few mines so it can act as a minelayer during wars.

[The Rock Doctor]

I suspect it'd be easier to find and requisition civilian ships to do defensive minelaying than to do the long-range escort function.  Best to use them in their niche, I think.

[Guinness]

The whole class probably doesn't need long-range wireless sets though.

Other than that, I don't see a sloop here. I see a Maori destroyer.

;D

[TexanCowboy]

Long range radio because its a ocean-patrol/escort sloop

[Guinness]

Right, I understand that. But unless they always operate alone, some of them could carry a different outfit.

At least that was my thought on the 300 ton Confederate sloops a while back.

[TexanCowboy]

See, thats the difference  ;). Your ships were 300 tons. This ship is more than 3 times the size, although I can't really tell where all that extra tons are going.

[Guinness]

around 4.5 knots of speed, for starters.

[TexanCowboy]

not much, for what he could have gotten.

[Guinness]

This ship also has twice as many slightly heavier guns, and torpedoes. I think the Colombians are getting their 900 odd tons worth.

[Tanthalas]

Having just compared, I think so to.