P-100 Class, NUS Patrolboat laid down 1908 (Engine 1905)
Displacement:
245 t light; 252 t standard; 262 t normal; 270 t full load
Dimensions: Length overall / water x beam x draught
158.74 ft / 155.00 ft x 20.00 ft x 8.00 ft (normal load)
48.38 m / 47.24 m x 6.10 m x 2.44 m
Armament:
1 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1905 Model
Quick firing gun in deck mounts
on centreline, all forward
6 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1905 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 7 lbs / 3 kg
Shells per gun, main battery: 250
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
- Conning tower: 1.00" / 25 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 2 shafts, 6,290 shp / 4,692 Kw = 25.33 kts
Range 500nm at 10.00 kts
Bunker at max displacement = 18 tons (100% coal)
Caution: Delicate, lightweight machinery
Complement:
32 - 42
Cost:
£0.031 million / $0.123 million
Distribution of weights at normal displacement:
Armament: 1 tons, 0.3 %
Armour: 2 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 153 tons, 58.4 %
Hull, fittings & equipment: 85 tons, 32.3 %
Fuel, ammunition & stores: 17 tons, 6.3 %
Miscellaneous weights: 5 tons, 1.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
67 lbs / 30 Kg = 16.7 x 2.0 " / 51 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 0.6 ft / 0.2 m
Roll period: 11.0 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.370
Length to Beam Ratio: 7.75 : 1
'Natural speed' for length: 12.45 kts
Power going to wave formation at top speed: 74 %
Trim (Max stability = 0, Max steadiness = 100): 72
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.00 ft / 4.57 m
- Forecastle (30 %): 15.00 ft / 4.57 m
- Mid (40 %): 15.00 ft / 4.57 m (7.00 ft / 2.13 m aft of break)
- Quarterdeck (20 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 10.20 ft / 3.11 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 193.2 %
- Above water (accommodation/working, high = better): 96.5 %
Waterplane Area: 1,884 Square feet or 175 Square metres
Displacement factor (Displacement / loading): 25 %
Structure weight / hull surface area: 19 lbs/sq ft or 93 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 6.30
- Overall: 0.64
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
VERY nice... excellent little harbor patrol craft.
I'd put a couple of torps on her, though... just for some sting.
P-100 Class, NUS Patrolboat laid down 1908 (Engine 1905)
Displacement:
245 t light; 251 t standard; 256 t normal; 260 t full load
Dimensions: Length overall / water x beam x draught
158.74 ft / 155.00 ft x 20.00 ft x 8.00 ft (normal load)
48.38 m / 47.24 m x 6.10 m x 2.44 m
Armament:
1 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1905 Model
Quick firing gun in deck mount
on centreline forward
6 - 1.06" / 27.0 mm guns in single mounts, 0.60lbs / 0.27kg shells, 1905 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 8 lbs / 3 kg
Shells per gun, main battery: 250
2 - 18.0" / 457.2 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.25" / 6 mm - -
- Conning tower: 0.50" / 13 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 2 shafts, 6,153 shp / 4,590 Kw = 25.33 kts
Range 200nm at 10.00 kts
Bunker at max displacement = 8 tons (100% coal)
Caution: Delicate, lightweight machinery
Complement:
31 - 41
Cost:
£0.030 million / $0.121 million
Distribution of weights at normal displacement:
Armament: 1 tons, 0.4 %
Armour: 1 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.2 %
Machinery: 149 tons, 58.1 %
Hull, fittings & equipment: 84 tons, 32.9 %
Fuel, ammunition & stores: 11 tons, 4.4 %
Miscellaneous weights: 10 tons, 3.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
62 lbs / 28 Kg = 15.6 x 2.0 " / 51 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 0.5 ft / 0.2 m
Roll period: 11.9 seconds
Steadiness - As gun platform (Average = 50 %): 73 %
- Recoil effect (Restricted arc if above 1.00): 0.05
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.361
Length to Beam Ratio: 7.75 : 1
'Natural speed' for length: 12.45 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 72
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.00 ft / 4.57 m
- Forecastle (30 %): 15.00 ft / 4.57 m
- Mid (40 %): 15.00 ft / 4.57 m (7.00 ft / 2.13 m aft of break)
- Quarterdeck (20 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 10.20 ft / 3.11 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 195.0 %
- Above water (accommodation/working, high = better): 67.0 %
Waterplane Area: 1,882 Square feet or 175 Square metres
Displacement factor (Displacement / loading): 25 %
Structure weight / hull surface area: 19 lbs/sq ft or 93 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 6.44
- Overall: 0.64
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
Great!
... she flies like a butterfly and stings like a bee!
Borys
not a bad little ship. I may have to consider somthing along these lines if i continue to build my 10" cruisers.
A .361 block co-efficient is too low for any vessel - something in the 0.40 to 0.43 range might be appropriate for a small, fast-ish boat.
I'd recommend more bunkerage - change your cruising speed to 25 knots in SS and see how much range you have with the existing load. Probably not much. I'd suggest ~1000 nm or so.
Edit: But I like the concept, don't get me wrong...
Larger BC + more range, check.
P-100 Class, NUS Patrolboat laid down 1908 (Engine 1905)
Displacement:
245 t light; 252 t standard; 262 t normal; 270 t full load
Dimensions: Length overall / water x beam x draught
158.74 ft / 155.00 ft x 18.00 ft x 8.00 ft (normal load)
48.38 m / 47.24 m x 5.49 m x 2.44 m
Armament:
1 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1905 Model
Quick firing gun in deck mounts
on centreline, all forward
6 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1905 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 7 lbs / 3 kg
Shells per gun, main battery: 200
2 - 18.0" / 457.2 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.25" / 6 mm - -
- Conning tower: 0.50" / 13 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 2 shafts, 6,013 shp / 4,485 Kw = 25.00 kts
Range 525nm at 10.00 kts
Bunker at max displacement = 19 tons (100% coal)
Caution: Delicate, lightweight machinery
Complement:
32 - 42
Cost:
£0.031 million / $0.122 million
Distribution of weights at normal displacement:
Armament: 1 tons, 0.3 %
Armour: 1 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.2 %
Machinery: 152 tons, 57.8 %
Hull, fittings & equipment: 82 tons, 31.3 %
Fuel, ammunition & stores: 17 tons, 6.4 %
Miscellaneous weights: 10 tons, 3.8 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
61 lbs / 28 Kg = 15.2 x 2.0 " / 51 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 0.4 ft / 0.1 m
Roll period: 11.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.06
Seaboat quality (Average = 1.00): 1.09
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.411
Length to Beam Ratio: 8.61 : 1
'Natural speed' for length: 12.45 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 65
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.00 ft / 4.57 m
- Forecastle (30 %): 15.00 ft / 4.57 m
- Mid (40 %): 15.00 ft / 4.57 m (7.00 ft / 2.13 m aft of break)
- Quarterdeck (20 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 10.20 ft / 3.11 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 193.5 %
- Above water (accommodation/working, high = better): 56.4 %
Waterplane Area: 1,729 Square feet or 161 Square metres
Displacement factor (Displacement / loading): 26 %
Structure weight / hull surface area: 18 lbs/sq ft or 87 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 7.07
- Overall: 0.65
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