These are virtual clones of the Dutch *Brinio*-class "Pantersbooten" on page 279 of *Jane's WW1*.

I intend to build a number of these boats, starting Q1/25.

[EDIT: Changed the designator; Filipino gunboats will have class designations based on their armament.]

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm

Light battery: 2 x 0.54-inch / 13.7mm

Weight of broadside: 122 lbs

Main belt, 2.0 inches; ends unarmored

Armor deck, average 0.75 inches

C.T., 2.0 inches

Battery armor:

Main, 0.5" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $476,000 (£119,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Cramped ship; poor crew accommodation, limited working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 15 tons = 3 pct

Armor, total ..................... 77 tons = 14 pct

Belt 33 tons = 6 pct

Deck 39 tons = 7 pct

C.T. 3 tons = 1 pct

Armament 2 tons = 0 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 330 tons = 61 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 1.0 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.18

Shellfire needed to sink: 1213 lbs = 39.7 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.0

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 61 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.16

Relative quality as a seaboat: 1.22

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 53 percent

Relative accommodation and working space: 75 percent

Displacement factor: 180 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.57

(Structure weight per square

foot of hull surface: 72 lbs)

Relative longitudinal hull strength: 4.90

(for 8.0 ft average freeboard;

freeboard adjustment -0.5 ft)

Relative composite hull strength: 1.76

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 8.00 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Central positioning of guns

Gun-shields

:

0 -- No secondary battery

0 -- No tertiary (QF/AA) battery

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

2.00 / 0.00 / 0.00 / 0.00; 54 -- Belt armor; relative extent

0.75 / 2.00 -- Deck / CT

0.50 / 0.00 / 0.00 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

I intend to build a number of these boats, starting Q1/25.

[EDIT: Changed the designator; Filipino gunboats will have class designations based on their armament.]

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm

Light battery: 2 x 0.54-inch / 13.7mm

Weight of broadside: 122 lbs

Main belt, 2.0 inches; ends unarmored

Armor deck, average 0.75 inches

C.T., 2.0 inches

Battery armor:

Main, 0.5" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $476,000 (£119,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Cramped ship; poor crew accommodation, limited working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 15 tons = 3 pct

Armor, total ..................... 77 tons = 14 pct

Belt 33 tons = 6 pct

Deck 39 tons = 7 pct

C.T. 3 tons = 1 pct

Armament 2 tons = 0 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 330 tons = 61 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 1.0 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.18

Shellfire needed to sink: 1213 lbs = 39.7 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.0

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 61 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.16

Relative quality as a seaboat: 1.22

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 53 percent

Relative accommodation and working space: 75 percent

Displacement factor: 180 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.57

(Structure weight per square

foot of hull surface: 72 lbs)

Relative longitudinal hull strength: 4.90

(for 8.0 ft average freeboard;

freeboard adjustment -0.5 ft)

Relative composite hull strength: 1.76

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 8.00 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Central positioning of guns

Gun-shields

:

0 -- No secondary battery

0 -- No tertiary (QF/AA) battery

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

2.00 / 0.00 / 0.00 / 0.00; 54 -- Belt armor; relative extent

0.75 / 2.00 -- Deck / CT

0.50 / 0.00 / 0.00 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Since I had lots of hull strength to play with, I raised the freeboard and thickened the armour.

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm

Light battery: 2 x 0.54-inch / 13.7mm

Weight of broadside: 128 lbs

Main belt, 4.0 inches; ends unarmored

Armor deck, average 1.0 inches

C.T., 2.5 inches

Battery armor:

Main, 1.97" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $476,000 (£119,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns

in the heaviest weather.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 15 tons = 3 pct

Armor, total ..................... 130 tons = 24 pct

Belt 67 tons = 12 pct

Deck 51 tons = 9 pct

C.T. 4 tons = 1 pct

Armament 8 tons = 1 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 277 tons = 51 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 0.9 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.14

Shellfire needed to sink: 1322 lbs = 43.2 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.1

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.22

Relative quality as a seaboat: 1.53

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 53 percent

Relative accommodation and working space: 90 percent

Displacement factor: 153 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.18

(Structure weight per square

foot of hull surface: 57 lbs)

Relative longitudinal hull strength: 4.88

(for 9.6 ft average freeboard;

freeboard adjustment +1.1 ft)

Relative composite hull strength: 1.36

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 9.60 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Central positioning of guns

Gun-shields

:

0 -- No secondary battery

0 -- No tertiary (QF/AA) battery

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

4.00 / 0.00 / 0.00 / 0.00; 54 -- Belt armor; relative extent

1.00 / 2.50 -- Deck / CT

1.97 / 0.00 / 0.00 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm

Light battery: 2 x 0.54-inch / 13.7mm

Weight of broadside: 128 lbs

Main belt, 4.0 inches; ends unarmored

Armor deck, average 1.0 inches

C.T., 2.5 inches

Battery armor:

Main, 1.97" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $476,000 (£119,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns

in the heaviest weather.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 15 tons = 3 pct

Armor, total ..................... 130 tons = 24 pct

Belt 67 tons = 12 pct

Deck 51 tons = 9 pct

C.T. 4 tons = 1 pct

Armament 8 tons = 1 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 277 tons = 51 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 0.9 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.14

Shellfire needed to sink: 1322 lbs = 43.2 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.1

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.22

Relative quality as a seaboat: 1.53

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 53 percent

Relative accommodation and working space: 90 percent

Displacement factor: 153 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.18

(Structure weight per square

foot of hull surface: 57 lbs)

Relative longitudinal hull strength: 4.88

(for 9.6 ft average freeboard;

freeboard adjustment +1.1 ft)

Relative composite hull strength: 1.36

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 9.60 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Central positioning of guns

Gun-shields

:

0 -- No secondary battery

0 -- No tertiary (QF/AA) battery

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

4.00 / 0.00 / 0.00 / 0.00; 54 -- Belt armor; relative extent

1.00 / 2.50 -- Deck / CT

1.97 / 0.00 / 0.00 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Added some extra armour (end and upper belts!) since I had oodles of hull strength left...also added an AA gun (a post-*Otta*-strike mod ).

Also Metricsed, bent, folded, spindled and mutilitated.

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm

AA battery: 1 x 2.24-inch / 57mm

Light battery: 2 x 0.54-inch / 13.7mm

Weight of broadside: 134 lbs

Main belt, 4.30 inches; bow and stern, 0.98 inches

Upper belt, 1.18 inches

Armor deck, average 1.18 inches

C.T., 2.56 inches

Battery armor:

Main, 1.97" shields

AA, 0.98" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $483,000 (£121,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns

in the heaviest weather.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 16 tons = 3 pct

Armor, total ..................... 177 tons = 32 pct

Belt 104 tons = 19 pct

Deck 61 tons = 11 pct

C.T. 4 tons = 1 pct

Armament 9 tons = 2 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 229 tons = 42 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 0.9 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.13

Shellfire needed to sink: 1294 lbs = 42.3 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.0

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.23

Relative quality as a seaboat: 1.51

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 54 percent

Relative accommodation and working space: 90 percent

Displacement factor: 133 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.97

(Structure weight per square

foot of hull surface: 47 lbs)

Relative longitudinal hull strength: 3.87

(for 9.6 ft average freeboard;

freeboard adjustment +1.1 ft)

Relative composite hull strength: 1.11

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 9.60 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Gun-shields

:

0 -- No secondary battery

1 x 2.24 -- Tertiary (QF/AA) battery

Gun-shields

:

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

4.30 / 0.98 / 1.18 / 0.00; 54 -- Belt armor; relative extent

1.18 / 2.56 -- Deck / CT

1.97 / 0.00 / 0.98 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Also Metricsed, bent, folded, spindled and mutilitated.

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm

AA battery: 1 x 2.24-inch / 57mm

Light battery: 2 x 0.54-inch / 13.7mm

Weight of broadside: 134 lbs

Main belt, 4.30 inches; bow and stern, 0.98 inches

Upper belt, 1.18 inches

Armor deck, average 1.18 inches

C.T., 2.56 inches

Battery armor:

Main, 1.97" shields

AA, 0.98" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $483,000 (£121,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns

in the heaviest weather.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 16 tons = 3 pct

Armor, total ..................... 177 tons = 32 pct

Belt 104 tons = 19 pct

Deck 61 tons = 11 pct

C.T. 4 tons = 1 pct

Armament 9 tons = 2 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 229 tons = 42 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 0.9 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.13

Shellfire needed to sink: 1294 lbs = 42.3 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.0

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.23

Relative quality as a seaboat: 1.51

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 54 percent

Relative accommodation and working space: 90 percent

Displacement factor: 133 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.97

(Structure weight per square

foot of hull surface: 47 lbs)

Relative longitudinal hull strength: 3.87

(for 9.6 ft average freeboard;

freeboard adjustment +1.1 ft)

Relative composite hull strength: 1.11

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 9.60 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Gun-shields

:

0 -- No secondary battery

1 x 2.24 -- Tertiary (QF/AA) battery

Gun-shields

:

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

4.30 / 0.98 / 1.18 / 0.00; 54 -- Belt armor; relative extent

1.18 / 2.56 -- Deck / CT

1.97 / 0.00 / 0.98 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Hadn't thought of that, thanks for pointing it out.

1.37 will have to do...

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm 52-cal Mk 23

Quick firing guns in deck mounts

in "diamond" arrangement, evenly spread

AA battery: 1 x 2.24-inch / 57mm

Dual purpose gun in a deck mount

on centerline end, aft, raised mount - superfiring

Light battery: 2 x 0.54-inch / 13.7mm

Machine guns in deck mounts

on side end, all aft

Weight of broadside: 134 lbs

Main belt, 3.94 inches; ends unarmored

Armor deck, average 0.98 inches

C.T., 2.24 inches

Battery armor:

Main, 1.57" shields

AA, 0.98" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $483,000 (£121,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns

in the heaviest weather.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 16 tons = 3 pct

Armor, total ..................... 126 tons = 23 pct

Belt 66 tons = 12 pct

Deck 50 tons = 9 pct

C.T. 3 tons = 1 pct

Armament 7 tons = 1 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 280 tons = 51 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 0.9 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.13

Shellfire needed to sink: 1295 lbs = 42.3 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.0

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.23

Relative quality as a seaboat: 1.52

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 54 percent

Relative accommodation and working space: 90 percent

Displacement factor: 152 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.19

(Structure weight per square

foot of hull surface: 58 lbs)

Relative longitudinal hull strength: 4.89

(for 9.6 ft average freeboard;

freeboard adjustment +1.1 ft)

Relative composite hull strength: 1.37

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 9.60 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Gun-shields

:

0 -- No secondary battery

1 x 2.24 -- Tertiary (QF/AA) battery

Gun-shields

:

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

3.94 / 0.00 / 0.00 / 0.00; 54 -- Belt armor; relative extent

0.98 / 2.24 -- Deck / CT

1.57 / 0.00 / 0.98 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

1.37 will have to do...

Filipino G-100 class gunboat, laid down 1925

Length, 172 ft x Beam, 28.0 ft x Depth, 9.0 ft

545 tons normal displacement (497 tons standard)

Main battery: 4 x 3.94-inch / 100mm 52-cal Mk 23

Quick firing guns in deck mounts

in "diamond" arrangement, evenly spread

AA battery: 1 x 2.24-inch / 57mm

Dual purpose gun in a deck mount

on centerline end, aft, raised mount - superfiring

Light battery: 2 x 0.54-inch / 13.7mm

Machine guns in deck mounts

on side end, all aft

Weight of broadside: 134 lbs

Main belt, 3.94 inches; ends unarmored

Armor deck, average 0.98 inches

C.T., 2.24 inches

Battery armor:

Main, 1.57" shields

AA, 0.98" shields

Maximum speed for 1500 shp = 16.09 knots

Approximate cruising radius, 5000 nm / 10 kts

Typical complement: 56-73

Estimated cost, $483,000 (£121,000)

Remarks:

Relative extent of belt armor, 54 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Excellent seaboat; comfortable and able to fight her guns

in the heaviest weather.

Magazines and engineering spaces are roomy, with superior

watertight subdivision.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 16 tons = 3 pct

Armor, total ..................... 126 tons = 23 pct

Belt 66 tons = 12 pct

Deck 50 tons = 9 pct

C.T. 3 tons = 1 pct

Armament 7 tons = 1 pct

Machinery ........................ 49 tons = 9 pct

Hull and fittings; equipment ..... 280 tons = 51 pct

Fuel, ammunition, stores ......... 69 tons = 13 pct

Miscellaneous weights ............ 5 tons = 1 pct

-----

545 tons = 100 pct

Estimated metacentric height, 0.9 ft

Displacement summary:

Light ship: 476 tons

Standard displacement: 497 tons

Normal service: 545 tons

Full load: 581 tons

Loading submergence 79 tons/foot

+++++++++++++++++++++++++

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.13

Shellfire needed to sink: 1295 lbs = 42.3 x 3.9-inch shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 1.0

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.23

Relative quality as a seaboat: 1.52

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.44

Sharpness coefficient: 0.37

Hull speed coefficient 'M' = 6.43

'Natural speed' for length = 13.1 knots

Power going to wave formation

at top speed: 55 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 54 percent

Relative accommodation and working space: 90 percent

Displacement factor: 152 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 1.19

(Structure weight per square

foot of hull surface: 58 lbs)

Relative longitudinal hull strength: 4.89

(for 9.6 ft average freeboard;

freeboard adjustment +1.1 ft)

Relative composite hull strength: 1.37

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

172.00 x 28.00 x 9.00; 9.60 -- Dimensions

0.44 -- Block coefficient

1925 -- Year laid down

16.09 / 5000 / 10.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

5 tons -- Miscellaneous weights

++++++++++

4 x 3.94; 0 -- Main battery; turrets

Gun-shields

:

0 -- No secondary battery

1 x 2.24 -- Tertiary (QF/AA) battery

Gun-shields

:

2 x 0.54 -- Fourth (light) battery

0 -- No torpedo armament

++++++++++

3.94 / 0.00 / 0.00 / 0.00; 54 -- Belt armor; relative extent

0.98 / 2.24 -- Deck / CT

1.57 / 0.00 / 0.98 / 0.00 -- Battery armor

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

*Sunday, October 21st 2018, 11:51pm*- Go to the top of the page

Forum Software: **Burning Board® Lite 2.1.2 pl 1**, developed by **WoltLab® GmbH**