Offensive Minelayers

[Kaiser Kirk]

This is for naval ships which have minelaying as the primary role
It is presumed there are harbor vessels for the defensive fields.

As of 1914 , the two Ostrich class (140mines) are the only dedicated minelayers.

Several protected cruisers also have the ability.
1902 PC 2-3 : 160 mines ea.
1904 PC 4-5 : 160 mines ea.
1906 PC 6-7 : 160 mines ea.

[Kaiser Kirk]

SCRAPPED

"Ostrich" *, Parthian 3rd Class Minelaying Cruiser laid down 1899
ML-I, II
# in Class : 2
# Active : 2
# Lost : 0

*So named for it's large eggs. The idea of a cruiser for offensive minelaying was short lived,
as the protected cruisers were given that capability.

[Kaiser Kirk]

Sahog "Hare", Parthian ML Corvette laid down 1926
1930 Basic AA Refit

1926.5   ML3 Sahog
1927.5   ML4 Sahog
1928.0   ML5 Sahog

Sahog, Parthian ML Corvette laid down 1926

Displacement:
   1,496 t light; 1,568 t standard; 1,865 t normal; 2,103 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (392.94 ft / 387.14 ft) x 36.75 ft x (10.93 / 11.86 ft)
   (119.77 m / 118.00 m) x 11.20 m  x (3.33 / 3.62 m)

Armament:
      4 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 205 per gun
     Quick firing guns in deck mounts, 1926 Model
     2 x 2-gun mounts on centreline, forward evenly spread
      1 raised mount
      8 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 800 per gun
     Anti-air guns in deck mounts, 1929 Model
     2 x 2 row quad mounts on sides forward
      2 raised mounts
      8 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 1,600 per gun
     Anti-air guns in deck mounts, 1926 Model
     2 x Quad mounts on centreline ends, evenly spread
      2 double raised mounts
      Weight of broadside 238 lbs / 108 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.24" / 6 mm         -               -
   3rd:   0.31" / 8 mm         -               -
   4th:   0.31" / 8 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 34,243 shp / 25,545 Kw = 32.00 kts
   Range 2,300nm at 22.00 kts
   Bunker at max displacement = 534 tons

Complement:
   141 - 184

Cost:
   £0.675 million / $2.699 million

Distribution of weights at normal displacement:
   Armament: 42 tons, 2.2 %
      - Guns: 42 tons, 2.2 %
   Armour: 3 tons, 0.1 %
      - Armament: 3 tons, 0.1 %
   Machinery: 939 tons, 50.3 %
   Hull, fittings & equipment: 430 tons, 23.1 %
   Fuel, ammunition & stores: 369 tons, 19.8 %
   Miscellaneous weights: 83 tons, 4.4 %
      - Hull void weights: 1 tons
      - Hull above water: 2 tons
      - On freeboard deck: 72 tons
      - Above deck: 8 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     538 lbs / 244 Kg = 10.2 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.37
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.17
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.436
   Length to Beam Ratio: 10.54 : 1
   'Natural speed' for length: 19.68 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  21.65 ft / 6.60 m,  19.03 ft / 5.80 m
      - Forward deck:   28.00 %,  19.03 ft / 5.80 m,  16.73 ft / 5.10 m
      - Aft deck:   37.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Quarter deck:   15.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Average freeboard:      13.46 ft / 4.10 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 169.8 %
      - Above water (accommodation/working, high = better): 150.5 %
   Waterplane Area: 8,869 Square feet or 824 Square metres
   Displacement factor (Displacement / loading): 78 %
   Structure weight / hull surface area: 31 lbs/sq ft or 150 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.91
      - Overall: 0.53
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform


All guns are given bulletproof 1/3" (8mm) spray shields.

1T - Construction reserve

AD:
4.2t - FC
0t - SR Radio
4.2t - NF Gear

OD:
2t - Lt. MS Paravanes
0t - 2 stern rails
70t - 70 mines

HAW
1.5t - CO2 Air Compressor AC

HBW



The Sahog, or Hare class uses the hull of the Palang Oceanic Destroyer as the basis for a high speed minelayer.

The fast, agile nature, along with the ability to leave little pellets behind led to the name.

The main battery is two two-gun  mounts mounted forward, leaving a clear mine deck aft.

Amidships is an elevated platform between the torpedo tubes, arranged en echelon are the two pairs of medium AA. This allows good sky arcs, and good engagement on the opposite broadside

For/aft, Paired twin GAST AAMG
are mounted to allow engagement of any plane seeking to strafe the length of the ship. These can also bear on the beam.

All guns are given bulletproof 1/4" (6mm) spray shields.

Range :
This class is meant to be a fast minelayer, so sustained high speed is important.

The savings from the geared turbines forms the 'emergency reserve', of 640nm at 16knts.

The ship can sustain 30knots for 30 hours, allowing a rapid dash out 450nm and back,
or it can manage a 1100nm radius at 22knots.

The 534 tons of fuel oil allows :
30.9 hours at 30 knots for 928nm.
31.6 hours at 29.85kts (75% power) (943nm)
104 hours at 22 knots. (2300nm at 22knts)
325 hours (13.5days) at 16knots (5210nm at 16knots

[color-grey]
Displacement:
   1,500 t light; 1,568 t standard; 1,865 t normal; 2,103 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (392.94 ft / 387.14 ft) x 36.75 ft x (10.93 / 11.86 ft)
   (119.77 m / 118.00 m) x 11.20 m  x (3.33 / 3.62 m)

Armament:
      4 - 4.72" / 120 mm 43.0 cal guns - 51.50lbs / 23.36kg shells, 220 per gun
     Quick firing guns in deck mounts, 1926 Model
     2 x 2-gun mounts on centreline, forward evenly spread
      1 raised mount
      4 - 2.24" / 57.0 mm 60.0 cal guns - 6.19lbs / 2.81kg shells, 350 per gun
     Anti-air guns in deck mounts, 1926 Model
     2 x 2-gun mounts on sides forward
      2 raised mounts
      8 - 0.59" / 15.0 mm 70.0 cal guns - 0.12lbs / 0.05kg shells, 2,500 per gun
     Anti-air guns in deck mounts, 1926 Model
     2 x 2 row quad mounts on centreline ends, evenly spread
      2 double raised mounts
      Weight of broadside 232 lbs / 105 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.24" / 6 mm         -               -
   3rd:   0.24" / 6 mm         -               -
   4th:   0.24" / 6 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 34,243 shp / 25,545 Kw = 32.00 kts
   Range 2,300nm at 22.00 kts
   Bunker at max displacement = 534 tons

Complement:
   141 - 184

Cost:
   £0.675 million / $2.698 million

Distribution of weights at normal displacement:
   Armament: 42 tons, 2.3 %
      - Guns: 42 tons, 2.3 %
   Armour: 2 tons, 0.1 %
      - Armament: 2 tons, 0.1 %
   Machinery: 938 tons, 50.3 %
   Hull, fittings & equipment: 430 tons, 23.0 %
   Fuel, ammunition & stores: 365 tons, 19.6 %
   Miscellaneous weights: 88 tons, 4.7 %
      - Hull void weights: 5 tons
      - Hull above water: 2 tons
      - On freeboard deck: 72 tons
      - Above deck: 9 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     541 lbs / 245 Kg = 10.3 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.436
   Length to Beam Ratio: 10.54 : 1
   'Natural speed' for length: 19.68 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  21.65 ft / 6.60 m,  19.03 ft / 5.80 m
      - Forward deck:   28.00 %,  19.03 ft / 5.80 m,  16.73 ft / 5.10 m
      - Aft deck:   37.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Quarter deck:   15.00 %,  8.53 ft / 2.60 m,  8.53 ft / 2.60 m
      - Average freeboard:      13.46 ft / 4.10 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 169.5 %
      - Above water (accommodation/working, high = better): 150.5 %
   Waterplane Area: 8,869 Square feet or 824 Square metres
   Displacement factor (Displacement / loading): 78 %
   Structure weight / hull surface area: 31 lbs/sq ft or 150 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.91
      - Overall: 0.53
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform



5T - Construction reserve

AD:
4.5t - FC
0t - SR Radio
4.5t - NF Gear

OD:
2t - Lt. MS Paravanes
0t - 2 stern rails
70t - 70 mines

HAW
1.5t - CO2 Air Compressor AC

HBW



[/color]

[Kaiser Kirk]

Xwarg- "Live Coal" Class, Parthian Fast Minelaying Corvette

Displacement:
   2,000 t light; 2,098 t standard; 2,518 t normal; 2,855 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (393.68 ft / 388.22 ft) x 40.78 ft x (13.25 / 14.45 ft)
   (119.99 m / 118.33 m) x 12.43 m  x (4.04 / 4.40 m)

Armament:
      3 - 4.53" / 115 mm 47.0 cal guns - 55.12lbs / 25.00kg shells, 330 per gun
     Dual purpose guns in deck mounts, 1932 Model
     3 x 2-gun mounts on centreline ends, majority forward
      1 raised mount - superfiring
      8 - 1.46" / 37.0 mm 70.0 cal guns - 1.72lbs / 0.78kg shells, 1,450 per gun
     Anti-air guns in deck mounts, 1932 Model
     1 x 2 row quad mount on sides, forward deck aft
      1 raised mount
     1 x 2 row quad mount on sides, aft deck forward
      1 raised mount
      8 - 0.91" / 23.0 mm 90.0 cal guns - 0.44lbs / 0.20kg shells, 3,000 per gun
     Anti-air guns in deck mounts, 1932 Model
     4 x Twin mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 183 lbs / 83 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.24" / 6 mm   0.24" / 6 mm            -
   2nd:   0.24" / 6 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 46,290 shp / 34,532 Kw = 32.75 kts
   Range 2,870nm at 22.00 kts
   Bunker at max displacement = 757 tons

Complement:
   177 - 231

Cost:
   £1.164 million / $4.654 million

Distribution of weights at normal displacement:
   Armament: 36 tons, 1.4 %
      - Guns: 36 tons, 1.4 %
   Armour: 6 tons, 0.2 %
      - Armament: 6 tons, 0.2 %
   Machinery: 1,261 tons, 50.1 %
   Hull, fittings & equipment: 567 tons, 22.5 %
   Fuel, ammunition & stores: 518 tons, 20.6 %
   Miscellaneous weights: 130 tons, 5.2 %
      - Hull void weights: 15 tons
      - Hull above water: 2 tons
      - On freeboard deck: 105 tons
      - Above deck: 8 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     766 lbs / 348 Kg = 16.5 x 4.5 " / 115 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 2.3 ft / 0.7 m
   Roll period: 11.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.10
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.420 / 0.437
   Length to Beam Ratio: 9.52 : 1
   'Natural speed' for length: 19.70 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 16.00 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 %,  19.03 ft / 5.80 m,  16.40 ft / 5.00 m
      - Forward deck:   40.00 %,  16.40 ft / 5.00 m,  14.11 ft / 4.30 m
      - Aft deck:   25.00 %,  14.11 ft / 4.30 m,  14.11 ft / 4.30 m
      - Quarter deck:   15.00 %,  14.11 ft / 4.30 m,  14.11 ft / 4.30 m
      - Average freeboard:      15.24 ft / 4.64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 167.1 %
      - Above water (accommodation/working, high = better): 157.4 %
   Waterplane Area: 9,870 Square feet or 917 Square metres
   Displacement factor (Displacement / loading): 85 %
   Structure weight / hull surface area: 34 lbs/sq ft or 168 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.21
      - Overall: 0.54
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

The Xwarg (Live Coal) Class Fast Minelayer is envisioned as a follow on to the Sahog class.

The consideration that AA rounds will have to added to the CP/SAP/AP loadout has increased the standard ammo supply from 220-250 to 330 rounds. Conceptually they expect AA engagements to be short bursts as a squadron of planes come through, not long engagements.

Reserve
15t

AD
4   FC 1930
4   NF 1930
0t  SR Radio


OD
5t Lt. Paravanes
100t - Mines


HAW
2t C02 Compressor AC

HBW