Patrol Class

Patrol class, SPQO:Navy Corvette laid down 1900

            937 t light; 965 t standard; 1.023 t normal; 1.069 t full load

            (56,54 m / 54,86 m) x 9,14 m  x (3,05 / 3,17 m)

  2 - 4,00" / 102 mm 40,0 cal guns - 30,67lbs / 13,91kg shells, 150 per gun

              Breech loading guns in deck mounts, 1900 Model

              2 x Single mounts on centreline, forward deck forward

  4 - 2,24" / 57,0 mm 45,0 cal guns - 5,71lbs / 2,59kg shells, 150 per gun

              Quick firing guns in deck mounts, 1900 Model

              4 x Single mounts on sides, evenly spread

  Weight of broadside 84 lbs / 38 kg

            In 4 sets of deck mounted side rotating tubes

## Armour:

  - Belts:            Width (max)       Length (avg)                     Height (avg)

            Main:  1,20" / 30 mm    143,00 ft / 43,59 m          16,00 ft / 4,88 m

            Ends:  Unarmoured

              Main Belt covers 122 % of normal length

###   - Gun armour:

Face (max)         Other gunhouse (avg)      Barbette/hoist (max)

            Main:  1,00" / 25 mm      -                                     -

            2nd:    1,00" / 25 mm      -                                     -

###   - Armoured deck - multiple decks:

            For and Aft decks: 1,00" / 25 mm

## Machinery:

            Coal fired boilers, complex reciprocating steam engines,

            Direct drive, 2 shafts, 2.372 ihp / 1.770 Kw = 16,00 kts

            Range 1.500nm at 10,00 kts

            Bunker at max displacement = 105 tons (100% coal)

## Cost:

            £0,089 million / $0,354 million

### Distribution of weights at normal displacement:

            Armament: 18 tons, 1,8 %

              - Guns: 13 tons, 1,3 %

              - Weapons: 5 tons, 0,5 %

            Armour: 196 tons, 19,1 %

              - Belts: 117 tons, 11,4 %

              - Armament: 13 tons, 1,3 %

              - Armour Deck: 63 tons, 6,2 %

              - Conning Tower: 2 tons, 0,2 %

            Machinery: 371 tons, 36,2 %

            Hull, fittings & equipment: 333 tons, 32,5 %

            Fuel, ammunition & stores: 86 tons, 8,4 %

            Miscellaneous weights: 20 tons, 2,0 %

              - On freeboard deck: 20 tons

### Overall survivability and seakeeping ability:

            Survivability (Non-critical penetrating hits needed to sink ship):

              1.134 lbs / 514 Kg = 35,4 x 4,0 " / 102 mm shells or 0,9 torpedoes

            Stability (Unstable if below 1.00): 1,30

            Metacentric height 1,3 ft / 0,4 m

            Roll period: 11,0 seconds

            Steadiness         - As gun platform (Average = 50 %): 100 %

                                          - Recoil effect (Restricted arc if above 1.00): 0,18

            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): 0,663 / 0,667

            Length to Beam Ratio: 6,00 : 1

            'Natural speed' for length: 13,42 kts

            Power going to wave formation at top speed: 61 %

            Trim (Max stability = 0, Max steadiness = 100): 50

            Bow angle (Positive = bow angles forward): 19,00 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 %,  16,00 ft / 4,88 m,  16,00 ft / 4,88 m

              - Forward deck: 30,00 %,  16,00 ft / 4,88 m,  16,00 ft / 4,88 m

              - Aft deck:      35,00 %,  16,00 ft / 4,88 m,  16,00 ft / 4,88 m

              - Quarter deck:  15,00 %,  16,00 ft / 4,88 m,  16,00 ft / 4,88 m

              - Average freeboard:                    16,00 ft / 4,88 m

### Ship space, strength and comments:

            Space  - Hull below water (magazines/engines, low = better): 121,6 %

                          - Above water (accommodation/working, high = better): 134,1 %

            Waterplane Area: 4.186 Square feet or 389 Square metres

            Displacement factor (Displacement / loading): 103 %

            Structure weight / hull surface area: 38 lbs/sq ft or 186 Kg/sq metre

            Hull strength (Relative):

                          - Cross-sectional: 0,77

                          - Longitudinal: 10,90

                          - Overall: 1,00

            Cramped machinery, storage, compartmentation space

            Excellent 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