WesWorld

Archer class batch 1, Atlantean Destroyer laid down 1946 (originally to be named the O and P class)

Displacement:
2,652 t light; 2,885 t standard; 3,311 t normal; 3,653 t full load

Dimensions: Length overall / water x beam x draught
459.46 ft / 450.00 ft x 42.75 ft x 13.85 ft (normal load)
140.04 m / 137.16 m x 13.03 m x 4.22 m

Armament:
6 - 5.10" / 130 mm guns (3x2 guns), 66.33lbs / 30.09kg shells, 1946 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 2.95" / 74.9 mm guns (2x2 guns), 12.84lbs / 5.82kg shells, 1946 Model
Dual purpose guns in deck mounts
on side, evenly spread, all raised mounts
4 - 2.95" / 74.9 mm guns (2x2 guns), 12.84lbs / 5.82kg shells, 1946 Model
Dual purpose guns in deck mounts
on centreline, evenly spread, all raised mounts
16 - 0.79" / 20.0 mm guns (4x4 guns), 0.24lbs / 0.11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1946 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 505 lbs / 229 kg
Shells per gun, main battery: 550
12 - 21.0" / 533.4 mm above water torpedoes (2x6)

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.58" / 40 mm 1.00" / 25 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -

- Conning tower: 1.58" / 40 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 50,358 shp / 37,567 Kw = 34.00 kts
Range 5,200nm at 18.00 kts
Bunker at max displacement = 768 tons

Complement:
217 - 283

Cost:
£2.335 million / $9.340 million

Distribution of weights at normal displacement:
Armament: 73 tons, 2.2 %
Armour: 56 tons, 1.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 49 tons, 1.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 8 tons, 0.2 %
Machinery: 1,251 tons, 37.8 %
Hull, fittings & equipment: 1,062 tons, 32.1 %
Fuel, ammunition & stores: 660 tons, 19.9 %
Miscellaneous weights: 210 tons, 6.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,443 lbs / 655 Kg = 21.8 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.0 ft / 0.6 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.27

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.435
Length to Beam Ratio: 10.53 : 1
'Natural speed' for length: 24.31 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (20 %): 22.50 ft / 6.86 m
- Mid (50 %): 22.50 ft / 6.86 m (14.00 ft / 4.27 m aft of break)
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 18.53 ft / 5.65 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 149.8 %
- Above water (accommodation/working, high = better): 113.0 %
Waterplane Area: 12,592 Square feet or 1,170 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 45 lbs/sq ft or 218 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.54
- Longitudinal: 1.74
- Overall: 0.60
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
Good seaboat, rides out heavy weather easily

Ships in class: Archer, Avenger, Attacker, Arbiter, Battler, Biter, Berserker, Blighter

50 tons for electronics
24 tons for 12 type 11 torpedo reloads
12 tons for HVAC
24 tons for two type 1 mortar launchers
20 tons for improved fire control
30 tons for improved fire/damage control systems
50 tons for crew comforts

What is likely layout of the gun arrangement?
Trying to envision where you can squeeze four twin 75mm mounts (2 beam and 2 centre), four 20mm quads and four MG twins as well as two sextuple racks of torpedoes (not to mention a couple of A/S mortars to boot!).

Mortars are actually on the bow, layout in general is as in the Swedish Halland class destroyers (which is what I'm going for looks wise too). Seeing as these ships are close to 70 feet longer than the historical Halland class I had assumed that the centerline 75mm mounts would be super imposed aft. As this is batch one, subsequent batches will have different layouts in an attempt to improve the design.

A coastal forces Tender design, eight ships are planned with two more laid down for Byzantium to service their MTB's.

Anubis, Atlantean design Coastal forces tender laid down 1946

Displacement:
689 t light; 718 t standard; 817 t normal; 895 t full load

Dimensions: Length overall / water x beam x draught
221.55 ft / 215.00 ft x 32.50 ft x 6.75 ft (normal load)
67.53 m / 65.53 m x 9.91 m x 2.06 m

Armament:
2 - 2.95" / 74.9 mm guns (1x2 guns), 12.84lbs / 5.82kg shells, 1946 Model
Dual purpose guns in a deck mount with hoist
on centreline forward
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1946 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 800

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 3,041 shp / 2,269 Kw = 18.00 kts
Range 6,000nm at 12.00 kts
Bunker at max displacement = 177 tons

Complement:
76 - 99

Cost:
£0.270 million / $1.081 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.5 %
Machinery: 76 tons, 9.3 %
Hull, fittings & equipment: 509 tons, 62.4 %
Fuel, ammunition & stores: 127 tons, 15.6 %
Miscellaneous weights: 100 tons, 12.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,663 lbs / 1,208 Kg = 207.5 x 3.0 " / 75 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 1.0 ft / 0.3 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.07
Seaboat quality (Average = 1.00): 1.39

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.606
Length to Beam Ratio: 6.62 : 1
'Natural speed' for length: 14.66 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.00 ft / 5.49 m
- Forecastle (20 %): 12.00 ft / 3.66 m
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 12.48 ft / 3.80 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 49.8 %
- Above water (accommodation/working, high = better): 154.6 %
Waterplane Area: 5,139 Square feet or 477 Square metres
Displacement factor (Displacement / loading): 288 %
Structure weight / hull surface area: 63 lbs/sq ft or 309 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.41
- Longitudinal: 5.10
- Overall: 1.61
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
Good seaboat, rides out heavy weather easily

Notes: based on the Boa Vista design these ships have improved capabilities over the preveous class.
Ships in class: Anubis, Baal, Horus, Hathor, Isis, Osiris, Ra, Seth
Two more ships, Homerus and Epigenes laid down for Byzantium.

Misc. tonnage breakdown:
32 tons for 20x21" type 15 torpedos
15 tons for 40 type 5 depth charges
5 tons for 1 crane
2 tons for 8,000x20mm ammo
1 ton for 1,000x40mm ammo
1 ton for 30,300x 50 cal ammo
44 tons for fuel and supplies

That makes sense. Might be tight but I think it might work.

Problem is I have no stats on the mortars used on the Halland's (yet) so I'm not sure how successful they will be on this design.

*edit* found some!

Quoted from "thesmilingassassin"

Problem is I have no stats on the mortars used on the Halland's (yet) so I'm not sure how successful they will be on this design.

*edit* found some!

The Halland carried a quad Bofors 375mm ASW mortar - a cloned version is used by the KM, and I believe that the Marine Nationale has a similar system planned or in service. I suppose you *could* mount them on the forecastle ahead of "A" mount but I'm not certain I'd want to be a member of that turret's gun crew - the back blast is considerable. Modern designs using remote-controlled mounts, such as Yubari, shown here, have fewer issues with the back-blast.

In KM service, this sort of system is mounted aft in lieu of torpedo tubes to avoid such issues.

Quoted from "BruceDuncan"

The Halland carried a quad Bofors 375mm ASW mortar - a cloned version is used by the KM, and I believe that the Marine Nationale has a similar system planned or in service. I suppose you *could* mount them on the forecastle ahead of "A" mount but I'm not certain I'd want to be a member of that turret's gun crew - the back blast is considerable. Modern designs using remote-controlled mounts, such as Yubari, shown here, have fewer issues with the back-blast.

Yes, the French and Russians designed a system similar to the Bofors system, and have used it for about four years now. The Russians call it 9K42-M6 "Groza", and the French use it as LRASM-320. I've used the system as it appears on Halland, with two quad mounts on the ship's forecastle.

I used the 320mm caliber, however, rather than the 375mm size.

Venerable, Virtuous, Atlantean Sub tender laid down 1946
This pair of ships are improved Venture types with a more modern AA outfit.

Displacement:
12,724 t light; 13,165 t standard; 15,722 t normal; 17,768 t full load

Dimensions: Length overall / water x beam x draught
530.19 ft / 520.00 ft x 74.00 ft x 26.00 ft (normal load)
161.60 m / 158.50 m x 22.56 m x 7.92 m

Armament:
4 - 5.10" / 130 mm guns (2x2 guns), 66.33lbs / 30.09kg shells, 1945 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
4 - 2.95" / 75.0 mm guns (2x2 guns), 12.87lbs / 5.84kg shells, 1945 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread, all raised mounts
4 - 2.95" / 75.0 mm guns (2x2 guns), 12.87lbs / 5.84kg shells, 1945 Model
Dual purpose guns in deck mounts
on side, evenly spread, all raised mounts
16 - 0.79" / 20.0 mm guns (8x2 guns), 0.24lbs / 0.11kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 6 raised mounts
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 373 lbs / 169 kg
Shells per gun, main battery: 550

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 4 shafts, 19,708 shp / 14,702 Kw = 20.00 kts
Range 30,004nm at 12.00 kts
Bunker at max displacement = 4,603 tons

Complement:
701 - 912

Cost:
£3.844 million / $15.374 million

Distribution of weights at normal displacement:
Armament: 49 tons, 0.3 %
Machinery: 498 tons, 3.2 %
Hull, fittings & equipment: 7,177 tons, 45.7 %
Fuel, ammunition & stores: 2,998 tons, 19.1 %
Miscellaneous weights: 5,000 tons, 31.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
35,666 lbs / 16,178 Kg = 537.7 x 5.1 " / 130 mm shells or 4.5 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 3.5 ft / 1.1 m
Roll period: 16.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle, low quarterdeck
Block coefficient: 0.550
Length to Beam Ratio: 7.03 : 1
'Natural speed' for length: 22.80 kts
Power going to wave formation at top speed: 42 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (20 %): 26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
- Mid (50 %): 26.00 ft / 7.92 m
- Quarterdeck (15 %): 18.00 ft / 5.49 m (26.00 ft / 7.92 m before break)
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 23.76 ft / 7.24 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 49.0 %
- Above water (accommodation/working, high = better): 176.3 %
Waterplane Area: 26,855 Square feet or 2,495 Square metres
Displacement factor (Displacement / loading): 246 %
Structure weight / hull surface area: 168 lbs/sq ft or 820 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.61
- Longitudinal: 3.55
- Overall: 1.74
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

Ships in class Venerable and Virtuous

Misc weights:
(1682 tons simmed as bunkerage *)
1,000 tons for ammo
1,000 tons for machine shop
1,000 tons for crew accomidations
200 tons for spare torpedo's (100)
500 tons for torpedo workshop
250 tons for workshop
250 tons for fabrication shop
300 tons for six 50 ton cranes
104 tons for 2 LCM's used for harbour replenishment operations
200 tons for dispensary and medical facilities
100 tons for Electronics (radar etc.)
60 tons for 6x300kw diesel generators

Last but not least, four improved Nereus class CV's will be laid down in 1946. They have the latest AA weaponry, auto 5.1" guns and improved deck armor.

Improved Nereus, Atlantean Aircraft carrier laid down 1946

Displacement:
29,354 t light; 30,443 t standard; 33,702 t normal; 36,309 t full load

Dimensions: Length overall / water x beam x draught
746.11 ft / 725.00 ft x 104.00 ft x 28.60 ft (normal load)
227.41 m / 220.98 m x 31.70 m x 8.72 m

Armament:
16 - 5.10" / 130 mm guns (8x2 guns), 66.33lbs / 30.09kg shells, 1946 Model
Automatic rapid fire guns in deck mounts with hoists
on side, evenly spread, all raised mounts
16 - 2.95" / 74.9 mm guns (8x2 guns), 12.84lbs / 5.82kg shells, 1946 Model
Dual purpose guns in deck mounts
on side, evenly spread, all raised mounts
40 - 0.79" / 20.0 mm guns (10x4 guns), 0.24lbs / 0.11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 8 raised mounts
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,277 lbs / 579 kg
Shells per gun, main battery: 550

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 440.00 ft / 134.11 m 16.50 ft / 5.03 m
Ends: Unarmoured
Main Belt covers 93 % of normal length

- Torpedo Bulkhead:
2.36" / 60 mm 360.00 ft / 109.73 m 29.99 ft / 9.14 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 1.57" / 40 mm
2nd: 1.00" / 25 mm - -
3rd: 0.59" / 15 mm - -

- Armour deck: 4.50" / 114 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 169,642 shp / 126,553 Kw = 33.00 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 5,866 tons

Complement:
1,243 - 1,616

Cost:
£12.600 million / $50.399 million

Distribution of weights at normal displacement:
Armament: 186 tons, 0.6 %
Armour: 6,923 tons, 20.5 %
- Belts: 1,253 tons, 3.7 %
- Torpedo bulkhead: 944 tons, 2.8 %
- Armament: 90 tons, 0.3 %
- Armour Deck: 4,548 tons, 13.5 %
- Conning Tower: 88 tons, 0.3 %
Machinery: 4,237 tons, 12.6 %
Hull, fittings & equipment: 10,608 tons, 31.5 %
Fuel, ammunition & stores: 4,348 tons, 12.9 %
Miscellaneous weights: 7,400 tons, 22.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
52,845 lbs / 23,970 Kg = 796.8 x 5.1 " / 130 mm shells or 8.3 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 6.4 ft / 1.9 m
Roll period: 17.3 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.07
Seaboat quality (Average = 1.00): 1.28

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.547
Length to Beam Ratio: 6.97 : 1
'Natural speed' for length: 31.49 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 58.00 ft / 17.68 m
- Forecastle (20 %): 58.00 ft / 17.68 m (24.00 ft / 7.32 m aft of break)
- Mid (50 %): 24.00 ft / 7.32 m
- Quarterdeck (15 %): 24.00 ft / 7.32 m
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 30.80 ft / 9.39 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 87.5 %
- Above water (accommodation/working, high = better): 200.9 %
Waterplane Area: 54,626 Square feet or 5,075 Square metres
Displacement factor (Displacement / loading): 139 %
Structure weight / hull surface area: 135 lbs/sq ft or 660 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.00
- Longitudinal: 1.76
- Overall: 1.05
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

6400 tons for 80 aircraft
200 tons for 8 spare aircraft (25 tons each)
200 tons for future growth
150 tons for electronics
150 tons for additional damage control
100 tons for command space

A full scale submarine based on the XSS-4 class experimental mini subs.

Alpha class experimental sub

Date: 1945
Type: Coastal
Length: 55.0m
Beam: 5.4m
Draft: 5.4m
Crush depth: 225m
Light Displacement: 700t
Loaded Displacement: 731t
Full Displacement: 802t
wt fuel&batts: 175t
Reserve buoyancy: 9%

Armament:
- 4 x 533mm torpedo tubes (6t for 4x reloads)
ElectricHP: 5600hp
DieselHP: 900hp
Speed:
- Max Surf Speed: 11.5 knots
- Max Sub Speed: 20.9 knots
Range:
- Surfaced: 2100nm@10 knots
- Submerged: 209nm@6 knots / 4nm @20.8 knots
Tons Oil: 25.0t
Tons Battery: 150.0t
Miscellaneous Weight: 13 ton

Crew: 34

Archer class batch 2, Atlantean Destroyer laid down 1946

This class is the same as the batch 1 vessels except 1 twin 5.1" turret has been substituted for 1x24 and 2x12 round type 1 spigot launchers

Displacement:
2,605 t light; 2,861 t standard; 3,311 t normal; 3,672 t full load

Dimensions: Length overall / water x beam x draught
459.46 ft / 450.00 ft x 42.75 ft x 13.85 ft (normal load)
140.04 m / 137.16 m x 13.03 m x 4.22 m

Armament:
4 - 5.10" / 130 mm guns (2x2 guns), 66.33lbs / 30.09kg shells, 1946 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline, all forward, 1 raised mount - superfiring
4 - 2.95" / 74.9 mm guns (2x2 guns), 12.84lbs / 5.82kg shells, 1946 Model
Dual purpose guns in deck mounts
on side, evenly spread, all raised mounts
4 - 2.95" / 74.9 mm guns (2x2 guns), 12.84lbs / 5.82kg shells, 1946 Model
Dual purpose guns in deck mounts
on centreline, evenly spread, all raised mounts
16 - 0.79" / 20.0 mm guns (4x4 guns), 0.24lbs / 0.11kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1946 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 372 lbs / 169 kg
Shells per gun, main battery: 825
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.58" / 40 mm 1.00" / 25 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -

- Conning tower: 1.58" / 40 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 50,358 shp / 37,567 Kw = 34.00 kts
Range 5,500nm at 18.00 kts
Bunker at max displacement = 811 tons

Complement:
217 - 283

Cost:
£2.212 million / $8.848 million

Distribution of weights at normal displacement:
Armament: 53 tons, 1.6 %
Armour: 44 tons, 1.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 36 tons, 1.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 8 tons, 0.2 %
Machinery: 1,258 tons, 38.0 %
Hull, fittings & equipment: 1,031 tons, 31.1 %
Fuel, ammunition & stores: 706 tons, 21.3 %
Miscellaneous weights: 220 tons, 6.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,513 lbs / 686 Kg = 22.8 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 2.1 ft / 0.6 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.35
Seaboat quality (Average = 1.00): 1.31

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.435
Length to Beam Ratio: 10.53 : 1
'Natural speed' for length: 24.31 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (20 %): 22.50 ft / 6.86 m
- Mid (50 %): 22.50 ft / 6.86 m (14.00 ft / 4.27 m aft of break)
- Quarterdeck (15 %): 14.00 ft / 4.27 m
- Stern: 14.00 ft / 4.27 m
- Average freeboard: 18.53 ft / 5.65 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 147.4 %
- Above water (accommodation/working, high = better): 113.0 %
Waterplane Area: 12,592 Square feet or 1,170 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 43 lbs/sq ft or 212 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.54
- Longitudinal: 1.77
- Overall: 0.61
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
Good seaboat, rides out heavy weather easily

Names: Charger, Chaser, Crusader, Challenger, Dodger, Dasher, Defender, Dagger

50 tons for electronics
24 tons for 12 type 11 torpedo reloads
12 tons for HVAC
24 tons for two type 1 mortar launchers
2 tons for 1x24 round and 2x12 round type 1 spigot launchers
20 tons for improved fire control
30 tons for improved fire/damage control systems
50 tons for crew comforts
8 tons reserved for future growth