Small Warship designs

[Darman]

If anyone is bored and interested I'm looking for 4 different classes of warship. 

1 armed steamer at 800 light tons. 

1 armed steamer at 600 light tons. 

1 customs patrol corvette at 550 light tons. 

1 customs patrol corvette at 250 light tons. 

[Jefgte]

year LD ?

[Darman]

Oh sorry.  late 1890s.  around 1898 or 99

[KWorld]

Here's a contender for the large customs patrol boat.  It's miscellaneous weight allows for inspection boats and inspection crews to be carried.



CPB-H, Japan Customs patrol boat, heavy laid down 1898

Displacement:
   544 t light; 560 t standard; 643 t normal; 709 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (200.00 ft / 200.00 ft) x 25.00 ft x (9.00 / 9.69 ft)
   (60.96 m / 60.96 m) x 7.62 m  x (2.74 / 2.95 m)

Armament:
      1 - 4.50" / 114 mm 40.0 cal gun - 43.67lbs / 19.81kg shells, 100 per gun
     Breech loading gun in deck mount, 1898 Model
     1 x Single mount on centreline forward
      4 - 1.85" / 47.0 mm 45.0 cal guns - 3.00lbs / 1.36kg shells, 200 per gun
     Quick firing guns in deck mounts, 1898 Model
     4 x Single mounts on side ends, evenly spread
      2 raised mounts - superfiring
      Weight of broadside 56 lbs / 25 kg

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 1,190 ihp / 888 Kw = 15.00 kts
   Range 3,000nm at 10.00 kts
   Bunker at max displacement = 149 tons (100% coal)

Complement:
   63 - 82

Cost:
   £0.052 million / $0.207 million

Distribution of weights at normal displacement:
   Armament: 9 tons, 1.4 %
      - Guns: 9 tons, 1.4 %
   Machinery: 214 tons, 33.4 %
   Hull, fittings & equipment: 230 tons, 35.8 %
   Fuel, ammunition & stores: 99 tons, 15.4 %
   Miscellaneous weights: 90 tons, 14.0 %
      - On freeboard deck: 50 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     711 lbs / 323 Kg = 15.6 x 4.5 " / 114 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 12.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.22
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has rise aft of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.512
   Length to Beam Ratio: 8.00 : 1
   'Natural speed' for length: 14.14 kts
   Power going to wave formation at top speed: 46 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  14.00 ft / 4.27 m,  11.00 ft / 3.35 m
      - Forward deck:   30.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
      - Aft deck:   35.00 %,  12.00 ft / 3.66 m,  11.00 ft / 3.35 m
      - Quarter deck:   15.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
      - Average freeboard:      11.42 ft / 3.48 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 112.5 %
      - Above water (accommodation/working, high = better): 113.5 %
   Waterplane Area: 3,331 Square feet or 309 Square metres
   Displacement factor (Displacement / loading): 118 %
   Structure weight / hull surface area: 35 lbs/sq ft or 170 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 4.64
      - Overall: 1.01
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Delta Force]

What are you looking for in terms of speed, range, armament, etc.?

[Darman]

1 armed steamer at 800 light tons. 
        10-14 knots, range 3,-5,000nm, armament: light deck mounts, no torpedoes. 

1 armed steamer at 600 light tons. 
        10-14 knots, range 3,-5,000nm, armament: light deck mounts (75-125mm), antipersonnel weapons, no torpedoes. 

1 customs patrol corvette at 550 light tons. 
        12-16 knots, range 2,-3,500nm, armament: single light deck mount (75-125mm), antipersonnel weapons, no torpedoes. 

1 customs patrol corvette at 250 light tons. 
         13-16 knots, range 1,500-2,500nm, armament: single heavy antipersonnel weapon (30-60mm), antipersonnel weapons, no torpedoes. 

[KWorld]

Slightly modified version of the previous design (traded a pair of 3-pounders for 6.5mm Hotchkiss MGs).

CPB-H, Japan Customs patrol boat, heavy laid down 1898

Displacement:
   548 t light; 564 t standard; 662 t normal; 740 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (200.00 ft / 200.00 ft) x 25.00 ft x (9.00 / 9.81 ft)
   (60.96 m / 60.96 m) x 7.62 m  x (2.74 / 2.99 m)

Armament:
      1 - 4.50" / 114 mm 40.0 cal gun - 43.67lbs / 19.81kg shells, 100 per gun
     Breech loading gun in deck mount, 1898 Model
     1 x Single mount on centreline forward
      2 - 1.85" / 47.0 mm 45.0 cal guns - 3.00lbs / 1.36kg shells, 200 per gun
     Quick firing guns in deck mounts, 1898 Model
     2 x Single mounts on sides, aft deck centre
      2 - 0.26" / 6.5 mm 80.0 cal guns - 0.01lbs / 0.00kg shells, 600 per gun
     Machine guns in deck mounts, 1898 Model
     2 x Single mounts on sides, forward deck centre
      2 raised mounts
      Weight of broadside 50 lbs / 23 kg

Armour:
   - Conning towers: Forward 2.00" / 51 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 1,218 ihp / 909 Kw = 15.00 kts
   Range 3,500nm at 10.00 kts
   Bunker at max displacement = 176 tons (100% coal)

Complement:
   64 - 84

Cost:
   £0.052 million / $0.209 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1.1 %
      - Guns: 8 tons, 1.1 %
   Armour: 3 tons, 0.5 %
      - Conning Tower: 3 tons, 0.5 %
   Machinery: 219 tons, 33.1 %
   Hull, fittings & equipment: 218 tons, 32.9 %
   Fuel, ammunition & stores: 114 tons, 17.2 %
   Miscellaneous weights: 100 tons, 15.1 %
      - On freeboard deck: 50 tons
      - Above deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     696 lbs / 316 Kg = 15.3 x 4.5 " / 114 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 11.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.515 / 0.528
   Length to Beam Ratio: 8.00 : 1
   'Natural speed' for length: 14.14 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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  13.00 ft / 3.96 m,  13.00 ft / 3.96 m
      - Forward deck:   30.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Aft deck:   35.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Quarter deck:   15.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Average freeboard:      10.60 ft / 3.23 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 111.2 %
      - Above water (accommodation/working, high = better): 100.5 %
   Waterplane Area: 3,378 Square feet or 314 Square metres
   Displacement factor (Displacement / loading): 117 %
   Structure weight / hull surface area: 35 lbs/sq ft or 169 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.88
      - Longitudinal: 3.54
      - Overall: 1.02
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[KWorld]

A small customs patrol boat.  [Note: this and my previous designs have been careful to use weapons already in the Japanese inventory, either in use by the IJN (the cannon) or the IJA (the 6.5mm Hotchkiss machineguns).]



CPB-L, Japan Light customs patrol boat laid down 1898

Displacement:
   250 t light; 257 t standard; 294 t normal; 324 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (140.00 ft / 140.00 ft) x 22.50 ft x (6.00 / 6.47 ft)
   (42.67 m / 42.67 m) x 6.86 m  x (1.83 / 1.97 m)

Armament:
      1 - 3.00" / 76.2 mm 40.0 cal gun - 12.94lbs / 5.87kg shells, 150 per gun
     Quick firing gun in deck mount, 1898 Model
     1 x Twin mount on centreline forward
      2 - 0.26" / 6.5 mm 80.0 cal guns - 0.01lbs / 0.00kg shells, 400 per gun
     Machine guns in deck mounts, 1898 Model
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts
      Weight of broadside 13 lbs / 6 kg

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 891 ihp / 665 Kw = 15.00 kts
   Range 2,000nm at 10.00 kts
   Bunker at max displacement = 66 tons (100% coal)

Complement:
   35 - 46

Cost:
   £0.028 million / $0.114 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.6 %
      - Guns: 2 tons, 0.6 %
   Machinery: 136 tons, 46.2 %
   Hull, fittings & equipment: 93 tons, 31.4 %
   Fuel, ammunition & stores: 44 tons, 14.9 %
   Miscellaneous weights: 20 tons, 6.8 %
      - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     199 lbs / 90 Kg = 14.8 x 3.0 " / 76 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.57
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 8.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 1.32

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.545 / 0.556
   Length to Beam Ratio: 6.22 : 1
   'Natural speed' for length: 11.83 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   Bow angle (Positive = bow angles forward): 0.00 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 %,  11.00 ft / 3.35 m,  10.50 ft / 3.20 m
      - Forward deck:   15.00 %,  7.00 ft / 2.13 m,  7.00 ft / 2.13 m
      - Aft deck:   50.00 %,  7.00 ft / 2.13 m,  7.00 ft / 2.13 m
      - Quarter deck:   15.00 %,  7.00 ft / 2.13 m,  7.00 ft / 2.13 m
      - Average freeboard:      7.74 ft / 2.36 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 151.7 %
      - Above water (accommodation/working, high = better): 83.4 %
   Waterplane Area: 2,188 Square feet or 203 Square metres
   Displacement factor (Displacement / loading): 94 %
   Structure weight / hull surface area: 28 lbs/sq ft or 135 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.65
      - Overall: 1.01
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Nobody]

No misc, but some armor:
P250, German Export Patrol boat laid down 1898

Displacement:
   250 t light; 258 t standard; 279 t normal; 296 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (141,06 ft / 137,80 ft) x 26,25 ft x (5,25 / 5,50 ft)
   (43,00 m / 42,00 m) x 8,00 m  x (1,60 / 1,68 m)

Armament:
      1 - 3,46" / 88,0 mm 30,0 cal gun - 15,43lbs / 7,00kg shells, 150 per gun
     Quick firing gun in deck mount, 1898 Model
     1 x Single mount on centreline, aft deck aft
      1 - 1,46" / 37,0 mm 20,0 cal gun - 1,39lbs / 0,63kg shells, 1.000 per gun
     Auto rapid fire gun in deck mount, 1898 Model
     1 x Single mount on centreline, forward deck forward
      1 raised mount
      4 - 0,31" / 8,0 mm 75,0 cal guns - 0,02lbs / 0,01kg shells, 1.500 per gun
     Machine guns in deck mounts, 1898 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 17 lbs / 8 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1,57" / 40 mm     88,58 ft / 27,00 m   5,97 ft / 1,82 m
   Ends:   1,57" / 40 mm     49,21 ft / 15,00 m   5,97 ft / 1,82 m
     Main Belt covers 99% of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 0,20" / 5 mm
   Forecastle: 0,20" / 5 mm  Quarter deck: 0,31" / 8 mm

   - Conning towers: Forward 1,57" / 40 mm, Aft 1,18" / 30 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 499 ihp / 372 Kw = 13,00 kts
   Range 2.000nm at 8,00 kts
   Bunker at max displacement = 38 tons (100% coal)

Complement:
   33 - 44

Cost:
   £0,021 million / $0,083 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 1,0%
      - Guns: 3 tons, 1,0%
   Armour: 67 tons, 23,9%
      - Belts: 54 tons, 19,4%
      - Armament: 1 tons, 0,3%
      - Armour Deck: 9 tons, 3,3%
      - Conning Towers: 3 tons, 0,9%
   Machinery: 80 tons, 28,8%
   Hull, fittings & equipment: 100 tons, 35,9%
   Fuel, ammunition & stores: 29 tons, 10,4%
   Miscellaneous weights: 0 tons, 0,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     528 lbs / 240 Kg = 25,4 x 3,5 " / 88 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,70
   Metacentric height 1,6 ft / 0,5 m
   Roll period: 8,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,03
   Seaboat quality  (Average = 1.00): 1,39

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0,515 / 0,521
   Length to Beam Ratio: 5,25 : 1
   'Natural speed' for length: 11,74 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 5,00 degrees
   Stern overhang: 2,17 ft / 0,66 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00%,  12,60 ft / 3,84 m,  10,30 ft / 3,14 m
      - Forward deck:   30,00%,  10,30 ft / 3,14 m,  10,30 ft / 3,14 m
      - Aft deck:   35,00%,  5,15 ft / 1,57 m,  5,15 ft / 1,57 m
      - Quarter deck:   15,00%,  5,15 ft / 1,57 m,  5,15 ft / 1,57 m
      - Average freeboard:      7,91 ft / 2,41 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 97,0%
      - Above water (accommodation/working, high = better): 102,3%
   Waterplane Area: 2.355 Square feet or 219 Square metres
   Displacement factor (Displacement / loading): 119%
   Structure weight / hull surface area: 30 lbs/sq ft or 146 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,33
      - Overall: 1,00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Darman]

My apologies Kworld, I just noticed you were limiting yourself to IJN or IJA weapons.  There is actually no need to make such limitations.  The ships are not for the IJN, they are for a third party and so the caliber of the weapons doesn't matter as much. 

I appreciate the contributions though!  Thank you very much. 

[Nobody]

And here is how the same ship could look without armor:
P250, German Export Patrol boat laid down 1898

Displacement:
   250 t light; 259 t standard; 313 t normal; 356 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (141,06 ft / 137,80 ft) x 26,25 ft x (5,91 / 6,55 ft)
   (43,00 m / 42,00 m) x 8,00 m  x (1,80 / 2,00 m)

Armament:
      1 - 3,46" / 88,0 mm 30,0 cal gun - 15,43lbs / 7,00kg shells, 150 per gun
     Quick firing gun in deck mount, 1898 Model
     1 x Single mount on centreline, aft deck aft
      1 - 1,46" / 37,0 mm 20,0 cal gun - 1,39lbs / 0,63kg shells, 1.000 per gun
     Auto rapid fire gun in deck mount, 1898 Model
     1 x Single mount on centreline, forward deck forward
      1 raised mount
      4 - 0,31" / 8,0 mm 75,0 cal guns - 0,02lbs / 0,01kg shells, 1.500 per gun
     Machine guns in deck mounts, 1898 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 17 lbs / 8 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm         -               -

   - Conning towers: Forward 1,57" / 40 mm, Aft 0,79" / 20 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 714 ihp / 533 Kw = 14,00 kts
   Range 5.000nm at 8,00 kts
   Bunker at max displacement = 98 tons (100% coal)

Complement:
   36 - 48

Cost:
   £0,026 million / $0,103 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0,9%
      - Guns: 3 tons, 0,9%
   Armour: 3 tons, 1,0%
      - Armament: 1 tons, 0,3%
      - Conning Towers: 2 tons, 0,7%
   Machinery: 115 tons, 36,8%
   Hull, fittings & equipment: 102 tons, 32,7%
   Fuel, ammunition & stores: 63 tons, 20,0%
   Miscellaneous weights: 27 tons, 8,6%
      - Hull below water: 1 tons
      - On freeboard deck: 1 tons
      - Above deck: 25 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     348 lbs / 158 Kg = 16,8 x 3,5 " / 88 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,64
   Metacentric height 1,5 ft / 0,5 m
   Roll period: 8,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,03
   Seaboat quality  (Average = 1.00): 1,39

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0,513 / 0,526
   Length to Beam Ratio: 5,25 : 1
   'Natural speed' for length: 11,74 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   Bow angle (Positive = bow angles forward): 5,00 degrees
   Stern overhang: 2,17 ft / 0,66 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00%,  12,60 ft / 3,84 m,  10,30 ft / 3,14 m
      - Forward deck:   30,00%,  10,30 ft / 3,14 m,  10,30 ft / 3,14 m
      - Aft deck:   35,00%,  5,15 ft / 1,57 m,  5,15 ft / 1,57 m
      - Quarter deck:   15,00%,  5,15 ft / 1,57 m,  5,15 ft / 1,57 m
      - Average freeboard:      7,91 ft / 2,41 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 122,5%
      - Above water (accommodation/working, high = better): 93,6%
   Waterplane Area: 2.350 Square feet or 218 Square metres
   Displacement factor (Displacement / loading): 117%
   Structure weight / hull surface area: 30 lbs/sq ft or 147 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,89
      - Longitudinal: 2,77
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Darman]

And just so everybody knows, these ships are for Chile or Brazil or Argentina.  The acceptance of a certain country's design entry does not gain that country anything material (this is all retro-active back to game setup) but it does garner good will.  Which, with the ABCs, you want.  I can guarantee a lot of activity from them soon. 

[KWorld]

An American-built version of the CPB-H already seen:

CPB-H, Any Customs patrol boat, heavy laid down 1898

Displacement:
   489 t light; 505 t standard; 589 t normal; 657 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (200.00 ft / 200.00 ft) x 25.00 ft x (8.25 / 8.96 ft)
   (60.96 m / 60.96 m) x 7.62 m  x (2.51 / 2.73 m)

Armament:
      1 - 4.00" / 102 mm 40.0 cal gun - 33.00lbs / 14.97kg shells, 150 per gun
     Quick firing gun in deck mount, 1898 Model
     1 x Single mount on centreline forward
      2 - 2.24" / 57.0 mm 45.0 cal guns - 6.00lbs / 2.72kg shells, 200 per gun
     Quick firing guns in deck mounts, 1898 Model
     2 x Single mounts on sides, aft deck centre
      2 - 0.28" / 7.0 mm 80.0 cal guns - 0.01lbs / 0.01kg shells, 600 per gun
     Machine guns in deck mounts, 1898 Model
     2 x Single mounts on sides, forward deck centre
      2 raised mounts
      Weight of broadside 45 lbs / 20 kg

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 1,130 ihp / 843 Kw = 15.00 kts
   Range 3,250nm at 10.00 kts
   Bunker at max displacement = 153 tons (100% coal)

Complement:
   59 - 77

Cost:
   £0.048 million / $0.190 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 1.2 %
      - Guns: 7 tons, 1.2 %
   Machinery: 204 tons, 34.5 %
   Hull, fittings & equipment: 188 tons, 31.9 %
   Fuel, ammunition & stores: 101 tons, 17.1 %
   Miscellaneous weights: 90 tons, 15.3 %
      - On freeboard deck: 50 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     591 lbs / 268 Kg = 18.5 x 4.0 " / 102 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.21
   Metacentric height 0.9 ft / 0.3 m
   Roll period: 11.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 100 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.513
   Length to Beam Ratio: 8.00 : 1
   'Natural speed' for length: 14.14 kts
   Power going to wave formation at top speed: 46 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  12.00 ft / 3.66 m,  9.00 ft / 2.74 m
      - Forward deck:   30.00 %,  9.00 ft / 2.74 m,  9.00 ft / 2.74 m
      - Aft deck:   35.00 %,  9.00 ft / 2.74 m,  9.00 ft / 2.74 m
      - Quarter deck:   15.00 %,  9.00 ft / 2.74 m,  9.00 ft / 2.74 m
      - Average freeboard:      9.24 ft / 2.82 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 115.8 %
      - Above water (accommodation/working, high = better): 96.8 %
   Waterplane Area: 3,331 Square feet or 309 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.33
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather


This one's for Chile or Brazil, so the MGs are 7mm x 57 Maxims.  An Argentine version of the same ship would use Maxims in 7.63mm x 53 instead.

Miscellaneous weight allows for an inspection team and their boats to be carried (in wartime, other things can replace these).

[KWorld]

And an American-built version of the small patrol boat.  Again, a Chilean/Brazilian customer, but replacing the MGs has no effect on the design.

CPB-L, Any Light customs patrol boat laid down 1898

Displacement:
   248 t light; 255 t standard; 292 t normal; 321 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (140.00 ft / 140.00 ft) x 22.50 ft x (6.00 / 6.47 ft)
   (42.67 m / 42.67 m) x 6.86 m  x (1.83 / 1.97 m)

Armament:
      1 - 3.00" / 76.2 mm 50.0 cal gun - 13.01lbs / 5.90kg shells, 150 per gun
     Quick firing gun in deck mount, 1898 Model
     1 x Twin mount on centreline forward
      2 - 0.28" / 7.0 mm 80.0 cal guns - 0.01lbs / 0.01kg shells, 400 per gun
     Machine guns in deck mounts, 1898 Model
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts
      Weight of broadside 13 lbs / 6 kg

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 883 ihp / 659 Kw = 15.00 kts
   Range 2,000nm at 10.00 kts
   Bunker at max displacement = 66 tons (100% coal)

Complement:
   34 - 45

Cost:
   £0.028 million / $0.113 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.9 %
      - Guns: 3 tons, 0.9 %
   Machinery: 134 tons, 45.9 %
   Hull, fittings & equipment: 92 tons, 31.4 %
   Fuel, ammunition & stores: 44 tons, 14.9 %
   Miscellaneous weights: 20 tons, 6.9 %
      - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     195 lbs / 88 Kg = 14.4 x 3.0 " / 76 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.51
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 9.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 81 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.540 / 0.551
   Length to Beam Ratio: 6.22 : 1
   'Natural speed' for length: 11.83 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 0.00 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 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
      - Forward deck:   15.00 %,  7.00 ft / 2.13 m,  7.00 ft / 2.13 m
      - Aft deck:   50.00 %,  7.00 ft / 2.13 m,  7.00 ft / 2.13 m
      - Quarter deck:   15.00 %,  7.00 ft / 2.13 m,  7.00 ft / 2.13 m
      - Average freeboard:      7.80 ft / 2.38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 151.4 %
      - Above water (accommodation/working, high = better): 85.4 %
   Waterplane Area: 2,178 Square feet or 202 Square metres
   Displacement factor (Displacement / loading): 93 %
   Structure weight / hull surface area: 28 lbs/sq ft or 134 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.70
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Miscellaneous weight allows for an inspection team.

[Nobody]

An attempt on the bigger one. Misc had to be mostly scarified for speed:
P500, German export large Patrol Boat laid down 1895

Displacement:
   500 t light; 513 t standard; 600 t normal; 669 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (182,09 ft / 182,09 ft) x 32,81 ft x (6,89 / 7,49 ft)
   (55,50 m / 55,50 m) x 10,00 m  x (2,10 / 2,28 m)

Armament:
      1 - 4,13" / 105 mm 35,0 cal gun - 37,48lbs / 17,00kg shells, 50 per gun
     Breech loading gun in deck mount, 1895 Model
     1 x Single mount on centreline, forward deck forward
      1 raised mount
      3 - 1,46" / 37,0 mm 20,0 cal guns - 0,96lbs / 0,44kg shells, 200 per gun
     Auto rapid fire guns in deck mounts, 1895 Model
     1 x Single mount on centreline, aft deck aft
     2 x Single mounts on sides, forward deck aft
      2 raised mounts
      4 - 0,31" / 8,0 mm 75,0 cal guns - 0,02lbs / 0,01kg shells, 500 per gun
     Machine guns in deck mounts, 1895 Model
     2 x Single mounts on sides, aft deck forward
      2 raised mounts
     2 x Single mounts on sides, forward deck centre
      2 double raised mounts
      Weight of broadside 40 lbs / 18 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,59" / 15 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1.623 ihp / 1.211 Kw = 16,00 kts
   Range 3.000nm at 10,00 kts
   Bunker at max displacement = 156 tons (100% coal)

Complement:
   59 - 78

Cost:
   £0,057 million / $0,230 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0,8%
      - Guns: 5 tons, 0,8%
   Armour: 1 tons, 0,2%
      - Armament: 1 tons, 0,2%
   Machinery: 275 tons, 45,9%
   Hull, fittings & equipment: 216 tons, 36,1%
   Fuel, ammunition & stores: 100 tons, 16,7%
   Miscellaneous weights: 2 tons, 0,3%
      - On freeboard deck: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     495 lbs / 224 Kg = 14,0 x 4,1 " / 105 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,96
   Metacentric height 2,7 ft / 0,8 m
   Roll period: 8,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,04
   Seaboat quality  (Average = 1.00): 1,37

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,510 / 0,523
   Length to Beam Ratio: 5,55 : 1
   'Natural speed' for length: 13,49 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   Bow angle (Positive = bow angles forward): 0,00 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%,  14,76 ft / 4,50 m,  12,07 ft / 3,68 m
      - Forward deck:   30,00%,  12,07 ft / 3,68 m,  12,07 ft / 3,68 m
      - Aft deck:   35,00%,  6,04 ft / 1,84 m,  6,04 ft / 1,84 m
      - Quarter deck:   15,00%,  6,04 ft / 1,84 m,  6,04 ft / 1,84 m
      - Average freeboard:      9,27 ft / 2,83 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 150,7%
      - Above water (accommodation/working, high = better): 114,4%
   Waterplane Area: 4.017 Square feet or 373 Square metres
   Displacement factor (Displacement / loading): 106%
   Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,30
      - Overall: 1,00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily


EDIT
And finally a proper ship:
P600, German export small Sloop laid down 1895

Displacement:
   600 t light; 619 t standard; 782 t normal; 914 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (198,82 ft / 196,85 ft) x 32,81 ft x (8,20 / 9,25 ft)
   (60,60 m / 60,00 m) x 10,00 m  x (2,50 / 2,82 m)

Armament:
      1 - 4,13" / 105 mm 35,0 cal gun - 37,48lbs / 17,00kg shells, 50 per gun
     Breech loading gun in deck mount, 1895 Model
     1 x Single mount on centreline, aft deck aft
      1 - 3,46" / 88,0 mm 20,0 cal gun - 18,64lbs / 8,46kg shells, 100 per gun
     Quick firing gun in deck mount, 1895 Model
     1 x Single mount on centreline, forward deck forward
      1 raised mount
      4 - 1,46" / 37,0 mm 20,0 cal guns - 0,96lbs / 0,44kg shells, 500 per gun
     Auto rapid fire guns in deck mounts, 1895 Model
     2 x Single mounts on sides amidships
      2 raised mounts
     2 x Single mounts on centreline ends, evenly spread
      2 double raised mounts
      4 - 0,31" / 8,0 mm 75,0 cal guns - 0,02lbs / 0,01kg shells, 1.500 per gun
     Machine guns in deck mounts, 1895 Model
     4 x Single mounts on sides, evenly spread
      4 double raised mounts
      Weight of broadside 60 lbs / 27 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0,79" / 20 mm   127,95 ft / 39,00 m   6,89 ft / 2,10 m
   Ends:   0,39" / 10 mm     68,86 ft / 20,99 m   6,89 ft / 2,10 m
   Upper:   0,39" / 10 mm   127,95 ft / 39,00 m   8,01 ft / 2,44 m
     Main Belt covers 100% of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,59" / 15 mm         -               -
   2nd:   0,39" / 10 mm         -               -
   4th:   0,39" / 10 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 0,39" / 10 mm
   Forecastle: 0,39" / 10 mm  Quarter deck: 0,59" / 15 mm

   - Conning towers: Forward 1,18" / 30 mm, Aft 0,79" / 20 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1.081 ihp / 807 Kw = 14,00 kts
   Range 5.000nm at 10,00 kts
   Bunker at max displacement = 295 tons (100% coal)

Complement:
   73 - 96

Cost:
   £0,049 million / $0,194 million

Distribution of weights at normal displacement:
   Armament: 7 tons, 0,8%
      - Guns: 7 tons, 0,8%
   Armour: 99 tons, 12,6%
      - Belts: 55 tons, 7,0%
      - Armament: 7 tons, 0,8%
      - Armour Deck: 34 tons, 4,3%
      - Conning Towers: 4 tons, 0,5%
   Machinery: 183 tons, 23,4%
   Hull, fittings & equipment: 271 tons, 34,7%
   Fuel, ammunition & stores: 183 tons, 23,4%
   Miscellaneous weights: 40 tons, 5,1%
      - Hull below water: 5 tons
      - Hull above water: 5 tons
      - On freeboard deck: 5 tons
      - Above deck: 25 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1.581 lbs / 717 Kg = 44,7 x 4,1 " / 105 mm shells or 0,8 torpedoes
   Stability (Unstable if below 1.00): 1,54
   Metacentric height 1,9 ft / 0,6 m
   Roll period: 9,9 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 rise forward of midbreak,
     a normal bow and a round stern
   Block coefficient (normal/deep): 0,517 / 0,535
   Length to Beam Ratio: 6,00 : 1
   'Natural speed' for length: 14,03 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 1,97 ft / 0,60 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20,00%,  14,76 ft / 4,50 m,  12,63 ft / 3,85 m
      - Forward deck:   40,00%,  12,63 ft / 3,85 m,  12,63 ft / 3,85 m
      - Aft deck:   25,00%,  6,30 ft / 1,92 m,  6,30 ft / 1,92 m
      - Quarter deck:   15,00%,  6,30 ft / 1,92 m,  6,30 ft / 1,92 m
      - Average freeboard:      10,27 ft / 3,13 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 80,6%
      - Above water (accommodation/working, high = better): 116,3%
   Waterplane Area: 4.371 Square feet or 406 Square metres
   Displacement factor (Displacement / loading): 150%
   Structure weight / hull surface area: 43 lbs/sq ft or 208 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,91
      - Longitudinal: 2,41
      - Overall: 1,00
   Excellent machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather