Gambotlar (Gunboats)

[Guinness]

Mansaf Class - 1883
G-1 Mansaf, laid down 1883
G-2 Jameed, laid down 1883, acquired by Bahrain 1901
G-3 Knafeh, laid down 1883, acquired by Bahrain 1901
G-4 Baqlawa, laid down 1884

Gaziantep Class - 1889
G-5 Gaziantep, laid down 1889
G-6 Giresun, laid down 1889
G-7 Gemlik, laid down 1889
G-8 Gediz, laid down 1889

Aintab Class - 1899
G-9 Aintab, laid down 1899
G-10 Bafra, laid down 1899
G-11 Tash-kupri, laid down 1900
G-12 Geukdjeh-dagh, laid down 1900
G-13 Orden, laid down 1900
G-14 Malatia, laid down 1901
G-15 Nertschehir, laid down 1901
G-16 Quokedfedok, laid down 1901
G-17 Refadieh, laid down 1902
G-18 Ersin, laid down 1902

Kastamonu Class - 1904
G-19 Kastamonu, laid down 1904
G-20 Yozgat, laid down 1904

[Guinness]

G-1 Mansaf, laid down 1883
G-2 Jameed, laid down 1883, acquired by Bahrain 1901
G-3 Knafeh, laid down 1883, acquired by Bahrain 1901
G-4 Baqlawa, laid down 1884

Mansaf, Ottoman gunboat laid down 1883

Displacement:
214 t light; 224 t standard; 233 t normal; 240 t full load

Dimensions: Length overall / water x beam x draught
150.92 ft / 150.92 ft x 29.53 ft x 3.28 ft (normal load)
46.00 m / 46.00 m x 9.00 m x 1.00 m

Armament:
2 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1883 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
1 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1883 Model
Quick firing gun in a deck mount with hoist
on centreline amidships
10 - 0.59" / 15.0 mm guns in single mounts, 0.11lbs / 0.05kg shells, 1883 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 41 lbs / 19 kg
Shells per gun, main battery: 200

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 196 ihp / 146 Kw = 10.02 kts
Range 1,500nm at 5.00 kts
Bunker at max displacement = 16 tons (100% coal)

Complement:
29 - 38

Cost:
£0.017 million / $0.067 million

Distribution of weights at normal displacement:
Armament: 4 tons, 1.9 %
Machinery: 39 tons, 16.7 %
Hull, fittings & equipment: 171 tons, 73.2 %
Fuel, ammunition & stores: 19 tons, 8.1 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
671 lbs / 305 Kg = 58.3 x 3.0 " / 75 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 0.9 ft / 0.3 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.20
Seaboat quality (Average = 1.00): 1.51

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.558
Length to Beam Ratio: 5.11 : 1
'Natural speed' for length: 12.28 kts
Power going to wave formation at top speed: 33 %
Trim (Max stability = 0, Max steadiness = 100): 66
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: 13.12 ft / 4.00 m
- Forecastle (20 %): 9.19 ft / 2.80 m
- Mid (65 %): 9.19 ft / 2.80 m (8.20 ft / 2.50 m aft of break)
- Quarterdeck (15 %): 8.20 ft / 2.50 m
- Stern: 8.20 ft / 2.50 m
- Average freeboard: 9.16 ft / 2.79 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 70.9 %
- Above water (accommodation/working, high = better): 182.8 %
Waterplane Area: 3,133 Square feet or 291 Square metres
Displacement factor (Displacement / loading): 205 %
Structure weight / hull surface area: 41 lbs/sq ft or 202 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.42
- 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, can fire her guns in the heaviest weather

[Guinness]

The seaworthiness and relatively heavy armament of this class suits them well in the Aegean. These ships were instrumental in crushing small Greek rebellions in the late 1890s.

G-5 Gaziantep, laid down 1889
G-6 Giresun, laid down 1889
G-7 Gemlik, laid down 1889
G-8 Gediz, laid down 1889

Gaziantep, Ottoman gunboat laid down 1889

Displacement:
776 t light; 811 t standard; 977 t normal; 1,110 t full load

Dimensions: Length overall / water x beam x draught
213.25 ft / 213.25 ft x 31.17 ft x 11.48 ft (normal load)
65.00 m / 65.00 m x 9.50 m x 3.50 m

Armament:
2 - 4.72" / 120 mm guns in single mounts, 52.91lbs / 24.00kg shells, 1889 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
2 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1889 Model
Quick firing guns in deck mounts with hoists
on side, all amidships
4 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1889 Model
Machine guns in deck mounts
on side ends, evenly spread
Weight of broadside 133 lbs / 60 kg
Shells per gun, main battery: 200

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 40.0" / 1,016 mm - -

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 492 ihp / 367 Kw = 11.00 kts
Range 4,000nm at 10.00 kts
Bunker at max displacement = 298 tons (100% coal)

Complement:
86 - 113

Cost:
£0.054 million / $0.215 million

Distribution of weights at normal displacement:
Armament: 16 tons, 1.7 %
Armour: 211 tons, 21.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 211 tons, 21.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 92 tons, 9.4 %
Hull, fittings & equipment: 457 tons, 46.8 %
Fuel, ammunition & stores: 201 tons, 20.6 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,518 lbs / 1,142 Kg = 48.5 x 4.7 " / 120 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.9 ft / 0.3 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.37
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.448
Length to Beam Ratio: 6.84 : 1
'Natural speed' for length: 14.60 kts
Power going to wave formation at top speed: 29 %
Trim (Max stability = 0, Max steadiness = 100): 37
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: 12.14 ft / 3.70 m
- Forecastle (20 %): 11.48 ft / 3.50 m
- Mid (65 %): 11.48 ft / 3.50 m (10.17 ft / 3.10 m aft of break)
- Quarterdeck (15 %): 10.17 ft / 3.10 m
- Stern: 10.17 ft / 3.10 m
- Average freeboard: 11.08 ft / 3.38 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 45.2 %
- Above water (accommodation/working, high = better): 103.9 %
Waterplane Area: 4,233 Square feet or 393 Square metres
Displacement factor (Displacement / loading): 186 %
Structure weight / hull surface area: 62 lbs/sq ft or 305 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.49
- 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

[Guinness]

Examples of this large class of gunboats can be found throughout the Empire. The transition to a smaller 105mm weapon with 16kg shell has increased rate of fire and eased the strain on gunnery crews.

G-9 Aintab, laid down 1899
G-10 Bafra, laid down 1899
G-11 Tash-kupri, laid down 1900
G-12 Geukdjeh-dagh, laid down 1900
G-13 Orden, laid down 1900
G-14 Malatia, laid down 1901
G-15 Nertschehir, laid down 1901
G-16 Quokedfedok, laid down 1901
G-17 Refadieh, laid down 1902
G-18 Ersin, laid down 1902

Aintab, Ottoman gunboat laid down 1899

Displacement:
260 t light; 272 t standard; 317 t normal; 353 t full load

Dimensions: Length overall / water x beam x draught
150.92 ft / 150.92 ft x 19.69 ft x 7.87 ft (normal load)
46.00 m / 46.00 m x 6.00 m x 2.40 m

Armament:
2 - 4.13" / 105 mm guns in single mounts, 35.27lbs / 16.00kg shells, 1899 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
Main guns limited to end-on fire
1 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1899 Model
Quick firing gun in deck mount
on centreline aft, 1 raised gun
4 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1899 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 84 lbs / 38 kg
Shells per gun, main battery: 100

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm - -

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 550 ihp / 410 Kw = 13.45 kts
Range 2,500nm at 10.00 kts
Bunker at max displacement = 81 tons (100% coal)

Complement:
36 - 48

Cost:
£0.032 million / $0.127 million

Distribution of weights at normal displacement:
Armament: 10 tons, 3.3 %
Armour: 5 tons, 1.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 1.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 98 tons, 31.0 %
Hull, fittings & equipment: 137 tons, 43.3 %
Fuel, ammunition & stores: 56 tons, 17.8 %
Miscellaneous weights: 10 tons, 3.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
254 lbs / 115 Kg = 7.2 x 4.1 " / 105 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 0.5 ft / 0.2 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 1.11
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.474
Length to Beam Ratio: 7.67 : 1
'Natural speed' for length: 12.28 kts
Power going to wave formation at top speed: 47 %
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: 13.45 ft / 4.10 m
- Forecastle (20 %): 9.19 ft / 2.80 m
- Mid (55 %): 9.19 ft / 2.80 m (8.20 ft / 2.50 m aft of break)
- Quarterdeck (15 %): 8.20 ft / 2.50 m
- Stern: 8.20 ft / 2.50 m
- Average freeboard: 9.08 ft / 2.77 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 128.6 %
- Above water (accommodation/working, high = better): 89.4 %
Waterplane Area: 1,934 Square feet or 180 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 34 lbs/sq ft or 164 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.82
- Longitudinal: 6.06
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
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

[Guinness]

A pair of smaller gunboats built on the cheap, intended for coastal service in the Adriatic.

G-19 Kastamonu, laid down 1904
G-20 Yozgat, laid down 1904

Kastamonu, Ottoman gunboat laid down 1904

Displacement:
173 t light; 178 t standard; 211 t normal; 238 t full load

Dimensions: Length overall / water x beam x draught
132.55 ft / 132.55 ft x 19.03 ft x 5.91 ft (normal load)
40.40 m / 40.40 m x 5.80 m x 1.80 m

Armament:
1 - 2.95" / 75.0 mm guns in single mounts, 13.23lbs / 6.00kg shells, 1904 Model
Quick firing gun in deck mount
on centreline forward
3 - 0.59" / 15.0 mm guns in single mounts, 0.10lbs / 0.05kg shells, 1904 Model
Machine guns in deck mounts
on side, evenly spread, 1 raised mount
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 100

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm - -

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 470 ihp / 351 Kw = 13.55 kts
Range 2,500nm at 10.00 kts
Bunker at max displacement = 60 tons (100% coal)

Complement:
26 - 35

Cost:
£0.019 million / $0.075 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.8 %
Armour: 1 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 80 tons, 38.1 %
Hull, fittings & equipment: 77 tons, 36.6 %
Fuel, ammunition & stores: 38 tons, 18.2 %
Miscellaneous weights: 12 tons, 5.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
185 lbs / 84 Kg = 14.4 x 3.0 " / 75 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 0.7 ft / 0.2 m
Roll period: 9.8 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.496
Length to Beam Ratio: 6.97 : 1
'Natural speed' for length: 11.51 kts
Power going to wave formation at top speed: 52 %
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: 12.66 ft / 3.86 m
- Forecastle (20 %): 8.07 ft / 2.46 m
- Mid (55 %): 8.07 ft / 2.46 m
- Quarterdeck (15 %): 8.07 ft / 2.46 m
- Stern: 8.07 ft / 2.46 m
- Average freeboard: 8.44 ft / 2.57 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 135.5 %
- Above water (accommodation/working, high = better): 99.0 %
Waterplane Area: 1,674 Square feet or 156 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 24 lbs/sq ft or 117 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.83
- Longitudinal: 5.12
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
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