Tankers, tenders and Collier

[Korpen]

Reorganisation under way.

[Korpen]

Colliers

Assahan class , Netherlands laid down 1895
Three ships

Displacement:
   1 770 t light; 1 890 t standard; 5 900 t normal; 9 108 t full load

Dimensions: Length overall / water x beam x draught
   306,23 ft / 298,56 ft x 36,09 ft x 26,25 ft (normal load)
   93,34 m / 91,00 m x 11,00 m  x 8,00 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 20,79lbs / 9,43kg shells, 1895 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread, all raised mounts
   Weight of broadside 42 lbs / 19 kg
   Shells per gun, main battery: 80

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 4 000 ihp / 2 984 Kw = 14,65 kts
   Range 24 470nm at 12,00 kts
   Bunker at max displacement = 7 218 tons (100% coal)

Complement:
   336 - 437

Cost:
   £0,161 million / $0,645 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,1 %
   Machinery: 678 tons, 11,5 %
   Hull, fittings & equipment: 1 037 tons, 17,6 %
   Fuel, ammunition & stores: 4 130 tons, 70,0 %
   Miscellaneous weights: 50 tons, 0,8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16 056 lbs / 7 283 Kg = 772,2 x 3,5 " / 88 mm shells or 3,1 torpedoes
   Stability (Unstable if below 1.00): 1,99
   Metacentric height 3,2 ft / 1,0 m
   Roll period: 8,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0,02
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,730
   Length to Beam Ratio: 8,27 : 1
   'Natural speed' for length: 17,28 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 15,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,40 ft / 5,00 m
      - Forecastle (20 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   13,12 ft / 4,00 m
      - Stern:      13,12 ft / 4,00 m
      - Average freeboard:   13,39 ft / 4,08 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 40,3 %
      - Above water (accommodation/working, high = better): 66,0 %
   Waterplane Area: 8 870 Square feet or 824 Square metres
   Displacement factor (Displacement / loading): 408 %
   Structure weight / hull surface area: 60 lbs/sq ft or 291 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,89
      - Longitudinal: 2,70
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Korpen]

Tenders

Koetei Class, Netherlands Tender laid down 1897
Two ships

Displacement:
   2 133 t light; 2 253 t standard; 5 900 t normal; 8 818 t full load

Dimensions: Length overall / water x beam x draught
   306,23 ft / 298,56 ft x 36,09 ft x 26,25 ft (normal load)
   93,34 m / 91,00 m x 11,00 m  x 8,00 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 20,79lbs / 9,43kg shells, 1897 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread, all raised mounts
   Weight of broadside 42 lbs / 19 kg
   Shells per gun, main battery: 80

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 4 000 ihp / 2 984 Kw = 14,65 kts
   Range 23 050nm at 12,00 kts
   Bunker at max displacement = 6 565 tons (100% coal)

Complement:
   336 - 437

Cost:
   £0,171 million / $0,683 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,1 %
   Machinery: 656 tons, 11,1 %
   Hull, fittings & equipment: 1 022 tons, 17,3 %
   Fuel, ammunition & stores: 3 767 tons, 63,8 %
   Miscellaneous weights: 450 tons, 7,6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11 581 lbs / 5 253 Kg = 556,9 x 3,5 " / 88 mm shells or 2,5 torpedoes
   Stability (Unstable if below 1.00): 1,35
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 11,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0,03
   Seaboat quality  (Average = 1.00): 2,00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,730
   Length to Beam Ratio: 8,27 : 1
   'Natural speed' for length: 17,28 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 15,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,40 ft / 5,00 m
      - Forecastle (20 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   13,12 ft / 4,00 m
      - Stern:      13,12 ft / 4,00 m
      - Average freeboard:   13,39 ft / 4,08 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 46,3 %
      - Above water (accommodation/working, high = better): 66,0 %
   Waterplane Area: 8 870 Square feet or 824 Square metres
   Displacement factor (Displacement / loading): 327 %
   Structure weight / hull surface area: 59 lbs/sq ft or 287 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,90
      - Longitudinal: 2,71
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Korpen]

Tydeman Class, Netherlands Large tender laid down 1898
Two ships

Displacement:
   3 510 t light; 3 730 t standard; 10 900 t normal; 16 636 t full load

Dimensions: Length overall / water x beam x draught
   401,38 ft / 393,70 ft x 49,21 ft x 26,25 ft (normal load)
   122,34 m / 120,00 m x 15,00 m  x 8,00 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 20,79lbs / 9,43kg shells, 1898 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread, all raised mounts
   Weight of broadside 42 lbs / 19 kg
   Shells per gun, main battery: 80

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 5 000 ihp / 3 730 Kw = 14,29 kts
   Range 34 200nm at 12,00 kts
   Bunker at max displacement = 12 906 tons (90% coal)

Complement:
   533 - 693

Cost:
   £0,239 million / $0,956 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,0 %
   Machinery: 798 tons, 7,3 %
   Hull, fittings & equipment: 1 907 tons, 17,5 %
   Fuel, ammunition & stores: 7 390 tons, 67,8 %
   Miscellaneous weights: 800 tons, 7,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32 082 lbs / 14 552 Kg = 1 542,9 x 3,5 " / 88 mm shells or 5,0 torpedoes
   Stability (Unstable if below 1.00): 1,62
   Metacentric height 3,9 ft / 1,2 m
   Roll period: 10,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 88 %
         - Recoil effect (Restricted arc if above 1.00): 0,01
   Seaboat quality  (Average = 1.00): 1,76

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,750
   Length to Beam Ratio: 8,00 : 1
   'Natural speed' for length: 19,84 kts
   Power going to wave formation at top speed: 35 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 15,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,40 ft / 5,00 m
      - Forecastle (20 %):   13,12 ft / 4,00 m
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (15 %):   13,12 ft / 4,00 m
      - Stern:      13,12 ft / 4,00 m
      - Average freeboard:   13,39 ft / 4,08 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 33,7 %
      - Above water (accommodation/working, high = better): 76,1 %
   Waterplane Area: 16 230 Square feet or 1 508 Square metres
   Displacement factor (Displacement / loading): 447 %
   Structure weight / hull surface area: 73 lbs/sq ft or 354 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,48
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Korpen]

Tankers
Louis De Geer, Netherlands Fleet tanker laid down 1908 (Engine 1909)

Four ships in service

Displacement:
   1 000 t light; 1 073 t standard; 3 451 t normal; 5 353 t full load

Dimensions: Length overall / water x beam x draught
   278,87 ft / 278,87 ft x 44,29 ft x 14,76 ft (normal load)
   85,00 m / 85,00 m x 13,50 m  x 4,50 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1908 Model
     Quick firing guns in deck mounts
     on side, all forward, all raised mounts - superfiring
      2 - 0,31" / 8,0 mm guns in single mounts, 0,02lbs / 0,01kg shells, 1908 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      1 - 1,97" / 50,0 mm guns in single mounts, 3,81lbs / 1,73kg shells, 1908 Model
     Breech loading gun in deck mount
     on centreline aft
   Weight of broadside 44 lbs / 20 kg
   Shells per gun, main battery: 150

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 4 179 shp / 3 117 Kw = 16,00 kts
   Range 33 310nm at 12,00 kts
   Bunker at max displacement = 4 280 tons

Complement:
   224 - 292

Cost:
   £0,066 million / $0,265 million

Distribution of weights at normal displacement:
   Armament: 6 tons, 0,2 %
   Machinery: 190 tons, 5,5 %
   Hull, fittings & equipment: 737 tons, 21,3 %
   Fuel, ammunition & stores: 2 451 tons, 71,0 %
   Miscellaneous weights: 68 tons, 2,0 %
      -Radio 10 ton
      -Pumps cranes and other refuling requipment. 58 ton.
Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19 678 lbs / 8 926 Kg = 946,4 x 3,5 " / 88 mm shells or 6,0 torpedoes
   Stability (Unstable if below 1.00): 2,20
   Metacentric height 5,0 ft / 1,5 m
   Roll period: 8,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 93 %
         - Recoil effect (Restricted arc if above 1.00): 0,01
   Seaboat quality  (Average = 1.00): 1,86

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0,662
   Length to Beam Ratio: 6,30 : 1
   'Natural speed' for length: 16,70 kts
   Power going to wave formation at top speed: 50 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      18,04 ft / 5,50 m
      - Forecastle (20 %):   13,29 ft / 4,05 m (9,84 ft / 3,00 m aft of break)
      - Mid (50 %):      9,84 ft / 3,00 m
      - Quarterdeck (15 %):   13,29 ft / 4,05 m (9,84 ft / 3,00 m before break)
      - Stern:      13,29 ft / 4,05 m
      - Average freeboard:   11,43 ft / 3,48 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 23,0 %
      - Above water (accommodation/working, high = better): 80,1 %
   Waterplane Area: 9 570 Square feet or 889 Square metres
   Displacement factor (Displacement / loading): 700 %
   Structure weight / hull surface area: 53 lbs/sq ft or 259 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,94
      - Longitudinal: 1,60
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Korpen]

VoC 1, Netherlands Tanker laid down 1911

Three ships in class

Displacement:
   3 400 t light; 3 603 t standard; 10 049 t normal; 15 206 t full load

Dimensions: Length overall / water x beam x draught
   461,66 ft / 459,32 ft x 65,62 ft x 19,69 ft (normal load)
   140,71 m / 140,00 m x 20,00 m  x 6,00 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1909 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
   Weight of broadside 40 lbs / 18 kg
   Shells per gun, main battery: 80

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 19 082 shp / 14 235 Kw = 21,00 kts
   Range 49 470nm at 12,00 kts
   Bunker at max displacement = 11 603 tons

Complement:
   501 - 652

Cost:
   £0,245 million / $0,979 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,1 %
   Machinery: 867 tons, 8,6 %
   Hull, fittings & equipment: 2 319 tons, 23,1 %
   Fuel, ammunition & stores: 6 649 tons, 66,2 %
   Miscellaneous weights: 209 tons, 2,1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40 200 lbs / 18 234 Kg = 1 933,3 x 3,5 " / 88 mm shells or 6,4 torpedoes
   Stability (Unstable if below 1.00): 2,29
   Metacentric height 9,5 ft / 2,9 m
   Roll period: 8,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 87 %
         - Recoil effect (Restricted arc if above 1.00): 0,00
   Seaboat quality  (Average = 1.00): 1,74

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0,593
   Length to Beam Ratio: 7,00 : 1
   'Natural speed' for length: 21,43 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 6,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22,31 ft / 6,80 m
      - Forecastle (20 %):   19,69 ft / 6,00 m (11,48 ft / 3,50 m aft of break)
      - Mid (50 %):      11,48 ft / 3,50 m
      - Quarterdeck (15 %):   19,69 ft / 6,00 m (11,48 ft / 3,50 m before break)
      - Stern:      19,69 ft / 6,00 m
      - Average freeboard:   14,56 ft / 4,44 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 32,3 %
      - Above water (accommodation/working, high = better): 95,6 %
   Waterplane Area: 21 896 Square feet or 2 034 Square metres
   Displacement factor (Displacement / loading): 506 %
   Structure weight / hull surface area: 76 lbs/sq ft or 370 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,09
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   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

3000 ton of fuel for own use = 12 500nm

[Korpen]

VoC 2 , Netherlands Tanker laid down 1912
Two ships laid down 1/1915

Displacement:
   4 000 t light; 4 293 t standard; 14 330 t normal; 22 359 t full load

Dimensions: Length overall / water x beam x draught
   492,13 ft / 492,13 ft x 59,06 ft x 21,33 ft (normal load)
   150,00 m / 150,00 m x 18,00 m  x 6,50 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1912 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 40 lbs / 18 kg
   Shells per gun, main battery: 300

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 24 285 shp / 18 117 Kw = 21,00 kts
   Range 71 000nm at 12,00 kts
   Bunker at max displacement = 18 066 tons

Complement:
   654 - 851

Cost:
   £0,280 million / $1,120 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,0 %
   Machinery: 968 tons, 6,8 %
   Hull, fittings & equipment: 2 837 tons, 19,8 %
   Fuel, ammunition & stores: 10 330 tons, 72,1 %
   Miscellaneous weights: 190 tons, 1,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     70 282 lbs / 31 880 Kg = 3 380,1 x 3,5 " / 88 mm shells or 8,9 torpedoes
   Stability (Unstable if below 1.00): 2,25
   Metacentric height 7,9 ft / 2,4 m
   Roll period: 8,8 seconds
   Steadiness   - As gun platform (Average = 50 %): 87 %
         - Recoil effect (Restricted arc if above 1.00): 0,00
   Seaboat quality  (Average = 1.00): 1,74

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0,809
   Length to Beam Ratio: 8,33 : 1
   'Natural speed' for length: 22,18 kts
   Power going to wave formation at top speed: 49 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      26,25 ft / 8,00 m
      - Forecastle (20 %):   21,33 ft / 6,50 m (13,12 ft / 4,00 m aft of break)
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (20 %):   21,33 ft / 6,50 m (13,12 ft / 4,00 m before break)
      - Stern:      21,33 ft / 6,50 m
      - Average freeboard:   16,80 ft / 5,12 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 25,4 %
      - Above water (accommodation/working, high = better): 97,8 %
   Waterplane Area: 25 595 Square feet or 2 378 Square metres
   Displacement factor (Displacement / loading): 661 %
   Structure weight / hull surface area: 76 lbs/sq ft or 372 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,01
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   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

[Korpen]

Hendrik van Mecklenburg-Schwerin, Netherlands Tanker laid down 1912
Four ships in class
Two laid down 2/1914
Two ships laid down in 1/1915, equiped with geared turbines.

Displacement:
   4 000 t light; 4 164 t standard; 8 000 t normal; 11 069 t full load

Dimensions: Length overall / water x beam x draught
   492,13 ft / 492,13 ft x 52,49 ft x 16,40 ft (normal load)
   150,00 m / 150,00 m x 16,00 m  x 5,00 m

Armament:
      2 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1912 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 40 lbs / 18 kg
   Shells per gun, main battery: 200

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 43 400 shp / 32 376 Kw = 27,00 kts
   Range 38 090nm at 12,00 kts
   Bunker at max displacement = 6 905 tons

Complement:
   422 - 549

Cost:
   £0,387 million / $1,546 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,1 %
   Machinery: 1 730 tons, 21,6 %
   Hull, fittings & equipment: 2 074 tons, 25,9 %
   Fuel, ammunition & stores: 4 000 tons, 50,0 %
   Miscellaneous weights: 190 tons, 2,4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     14 117 lbs / 6 403 Kg = 678,9 x 3,5 " / 88 mm shells or 2,0 torpedoes
   Stability (Unstable if below 1.00): 1,84
   Metacentric height 5,1 ft / 1,6 m
   Roll period: 9,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 61 %
         - Recoil effect (Restricted arc if above 1.00): 0,00
   Seaboat quality  (Average = 1.00): 1,22

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0,661
   Length to Beam Ratio: 9,38 : 1
   'Natural speed' for length: 22,18 kts
   Power going to wave formation at top speed: 57 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      26,25 ft / 8,00 m
      - Forecastle (20 %):   21,33 ft / 6,50 m (13,12 ft / 4,00 m aft of break)
      - Mid (50 %):      13,12 ft / 4,00 m
      - Quarterdeck (20 %):   21,33 ft / 6,50 m (13,12 ft / 4,00 m before break)
      - Stern:      21,33 ft / 6,50 m
      - Average freeboard:   16,80 ft / 5,12 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 74,2 %
      - Above water (accommodation/working, high = better): 118,4 %
   Waterplane Area: 19 985 Square feet or 1 857 Square metres
   Displacement factor (Displacement / loading): 217 %
   Structure weight / hull surface area: 69 lbs/sq ft or 337 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,00
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Good seaboat, rides out heavy weather easily

[Korpen]

Guerilla-class Netherlands Tanker laid down 1912
Four ships in class

Displacement:
   672 t light; 725 t standard; 1 614 t normal; 2 325 t full load

Dimensions: Length overall / water x beam x draught
   262,47 ft / 262,47 ft x 42,65 ft x 7,22 ft (normal load)
   80,00 m / 80,00 m x 13,00 m  x 2,20 m

Armament:
      1 - 3,46" / 88,0 mm guns in single mounts, 19,84lbs / 9,00kg shells, 1912 Model
     Breech loading gun in deck mount
     on centreline aft, 1 raised gun
   Weight of broadside 20 lbs / 9 kg
   Shells per gun, main battery: 1 880

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 2 271 shp / 1 694 Kw = 15,00 kts
   Range 20 410nm at 12,00 kts
   Bunker at max displacement = 1 600 tons

Complement:
   126 - 165

Cost:
   £0,038 million / $0,153 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0,2 %
   Machinery: 91 tons, 5,6 %
   Hull, fittings & equipment: 462 tons, 28,6 %
   Fuel, ammunition & stores: 942 tons, 58,4 %
   Miscellaneous weights: 117 tons, 7,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7 501 lbs / 3 402 Kg = 360,8 x 3,5 " / 88 mm shells or 3,5 torpedoes
   Stability (Unstable if below 1.00): 1,91
   Metacentric height 3,9 ft / 1,2 m
   Roll period: 9,1 seconds
   Steadiness   - As gun platform (Average = 50 %): 77 %
         - Recoil effect (Restricted arc if above 1.00): 0,00
   Seaboat quality  (Average = 1.00): 1,54

Hull form characteristics:
   Hull has raised forecastle, raised quarterdeck
   Block coefficient: 0,699
   Length to Beam Ratio: 6,15 : 1
   'Natural speed' for length: 16,20 kts
   Power going to wave formation at top speed: 44 %
   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 (% = measuring location as a percentage of overall length):
      - Stem:      16,40 ft / 5,00 m
      - Forecastle (20 %):   14,76 ft / 4,50 m (6,56 ft / 2,00 m aft of break)
      - Mid (50 %):      6,56 ft / 2,00 m
      - Quarterdeck (20 %):   14,76 ft / 4,50 m (6,56 ft / 2,00 m before break)
      - Stern:      14,76 ft / 4,50 m
      - Average freeboard:   9,97 ft / 3,04 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 30,2 %
      - Above water (accommodation/working, high = better): 88,9 %
   Waterplane Area: 8 965 Square feet or 833 Square metres
   Displacement factor (Displacement / loading): 506 %
   Structure weight / hull surface area: 41 lbs/sq ft or 200 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,04
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Designed to carry enogh fuels, ammunition and torpedos to allow a four-ship KTB lance to make five sorties, of which two includes expenditure of all ammunition and torpedos. Intended to head up some shallow river (in the NOI) or loch (in Europe) and be used as a temporary short-time base for a torpedoboot lance a long way from the main bases, meaning every river and bay might hide a danger to an attacker.