WesWorld

Hello everyone




Since I am designing a lot of ships I think that maybe I
should publish then in one single post, if you agreed. That way I would avoid
the addition of innecesay post on the folder. Of course, if I start bothering
you by publishing too much or if you think I'm spamming many of my designs, you
can tell me to stop. I know that sometimes I can get a little obsessed.





Now, with the ship in cuestion. I base it on the Hunter
class or rather: it is a Hunter class. I wanted to face what it would be like
to take an older vessel and refit it. In this case for a different role. It is
now a convoy escort specialized in anti-submarine warfare. This added some
limatations that made the proces really interesting. I would like to hear your
opinions about it. Keep in mind that it was renovated in 1937-1938.






Persecutor Class, Escort Destroyer laid down 1923


Displacement:
1.397 t light; 1.468 t standard; 1.617 t normal; 1.736 t full load


Dimensions: Length overall / water x beam x draught
363,58 ft / 344,49 ft x 29,86 ft x 12,80 ft (normal load)
110,82 m / 105,00 m x 9,10 m x 3,90 m


Armament:
2 - 4,00" / 102 mm guns (1x2 guns), 32,00lbs / 14,51kg shells, 1917 Model
Quick firing guns in deck mount
on centreline forward
12 - 2,76" / 70,0 mm guns (6x2 guns), 10,47lbs / 4,75kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, all amidships
24 - 0,79" / 20,0 mm guns (6x4 guns), 0,24lbs / 0,11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
2 - 2,76" / 70,0 mm guns (1x2 guns), 10,47lbs / 4,75kg shells, 1932 Model
Anti-aircraft guns in deck mount
on centreline aft
Weight of broadside 216 lbs / 98 kg
Shells per gun, main battery: 250


Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,97" / 50 mm 0,79" / 20 mm -
2nd: 0,79" / 20 mm - -
3rd: 0,79" / 20 mm - -
4th: 0,79" / 20 mm - -


- Conning tower: 1,57" / 40 mm


Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 37.687 shp / 28.115 Kw = 33,00 kts
Range 5.200nm at 12,00 kts
Bunker at max displacement = 269 tons


Complement:
126 - 165


Cost:
£0,557 million / $2,227 million


Distribution of weights at normal displacement:
Armament: 27 tons, 1,7 %
Armour: 18 tons, 1,1 %
- Belts: 0 tons, 0,0 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 13 tons, 0,8 %
- Armour Deck: 0 tons, 0,0 %
- Conning Tower: 5 tons, 0,3 %
Machinery: 855 tons, 52,9 %
Hull, fittings & equipment: 386 tons, 23,9 %
Fuel, ammunition & stores: 220 tons, 13,6 %
Miscellaneous weights: 111 tons, 6,8 %


Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
321 lbs / 146 Kg = 10,0 x 4,0 " / 102 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,28
Metacentric height 1,3 ft / 0,4 m
Roll period: 11,1 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,28
Seaboat quality (Average = 1.00): 1,18


Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,430
Length to Beam Ratio: 11,54 : 1
'Natural speed' for length: 18,56 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 13,12 ft / 4,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16,40 ft / 5,00 m
- Forecastle (20 %): 16,40 ft / 5,00 m
- Mid (50 %): 13,12 ft / 4,00 m
- Quarterdeck (15 %): 13,12 ft / 4,00 m
- Stern: 13,12 ft / 4,00 m
- Average freeboard: 14,27 ft / 4,35 m
Ship tends to be wet forward


Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 192,2 %
- Above water (accommodation/working, high = better): 135,5 %
Waterplane Area: 6.458 Square feet or 600 Square metres
Displacement factor (Displacement / loading): 56 %
Structure weight / hull surface area: 27 lbs/sq ft or 130 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,43
- Longitudinal: 1,89
- Overall: 0,50
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform


Misc Weight Breakdow:
AS Equipment:
2 deapth charges racks at each side of the quarter deck (1,5 tons each)
250 deapth charges of 400 kg/882 lbs (total of 87,6 tons)
Sonar (10 tons)
Radar equipment:
Surface radar (20 tons)
Total: 110,6 tons

As far as design spamming goes, no need to worry, keep firing off those designs as it keeps everyone interested!

My first question is what was the original configuration of this design? It helps to understand just what modification you have made to get the current design. Also, my first nit pick would be the number of shells per main gun. If its a quick firing weapon any prolonged action would deplete your ammo quickly. That said if its purely anti sub then you may be okay, you don't need a lot of 4" ammunition to finish off a sub you have forced to the surface due to depth charging.

About the ammo. It´s supposed to be dedicated to sink submarines. Of course that, if is necessary it would make a stand but in that case she would not be alone. So here possibilities are not that grim.

And sorry, with the hurry I completely forgot about it. Here is the original:

Hunter Class, Destroyer laid down 1923

Displacement:
1.472 t light; 1.522 t standard; 1.617 t normal; 1.693 t full load

Dimensions: Length overall / water x beam x draught
351,65 ft / 344,49 ft x 29,86 ft x 12,80 ft (normal load)
107,18 m / 105,00 m x 9,10 m x 3,90 m

Armament:
6 - 4,00" / 102 mm guns (3x2 guns), 32,00lbs / 14,51kg shells, 1917 Model
Quick firing guns in deck mounts
on centreline ends, majority forward
2 - 1,50" / 38,1 mm guns (1x2 guns), 1,69lbs / 0,77kg shells, 1923 Model
Dual purpose guns in deck mount
on centreline forward, all raised guns - superfiring
2 - 1,50" / 38,1 mm guns (1x2 guns), 1,69lbs / 0,77kg shells, 1923 Model
Dual purpose guns in deck mount
on centreline aft, all raised guns - superfiring
8 - 0,99" / 25,1 mm guns (2x4 guns), 0,49lbs / 0,22kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 203 lbs / 92 kg
Shells per gun, main battery: 150
8 - 21,0" / 533,4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,97" / 50 mm 0,79" / 20 mm -
2nd: 1,18" / 30 mm 0,39" / 10 mm -
3rd: 1,18" / 30 mm 0,39" / 10 mm -
4th: 1,18" / 30 mm 0,39" / 10 mm -

- Conning tower: 1,57" / 40 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 44.467 shp / 33.172 Kw = 34,30 kts
Range 3.200nm at 12,00 kts
Bunker at max displacement = 171 tons

Complement:
126 - 165

Cost:
£0,592 million / $2,367 million

Distribution of weights at normal displacement:
Armament: 25 tons, 1,6 %
Armour: 26 tons, 1,6 %
- Belts: 0 tons, 0,0 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 22 tons, 1,3 %
- Armour Deck: 0 tons, 0,0 %
- Conning Tower: 5 tons, 0,3 %
Machinery: 933 tons, 57,7 %
Hull, fittings & equipment: 472 tons, 29,2 %
Fuel, ammunition & stores: 145 tons, 9,0 %
Miscellaneous weights: 15 tons, 0,9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
345 lbs / 157 Kg = 10,8 x 4,0 " / 102 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,23
Metacentric height 1,2 ft / 0,4 m
Roll period: 11,5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,27
Seaboat quality (Average = 1.00): 1,07

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,430
Length to Beam Ratio: 11,54 : 1
'Natural speed' for length: 18,56 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 65
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: 19,69 ft / 6,00 m
- Forecastle (20 %): 16,40 ft / 5,00 m
- Mid (50 %): 13,12 ft / 4,00 m
- Quarterdeck (15 %): 13,12 ft / 4,00 m
- Stern: 13,12 ft / 4,00 m
- Average freeboard: 14,53 ft / 4,43 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 199,1 %
- Above water (accommodation/working, high = better): 62,9 %
Waterplane Area: 6.458 Square feet or 600 Square metres
Displacement factor (Displacement / loading): 50 %
Structure weight / hull surface area: 32 lbs/sq ft or 156 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,51
- Longitudinal: 2,41
- Overall: 0,59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform

Oh. And thanks for the support. It´s really helpfull

Hello everyone



Well, I am publishing this here since this desing is also a variation of of the Hunter class. There is only some diferences to adapt it to a AA roll.




Chaser Class, AA Escort Destroyer laid down 1923


Displacement:
1.662 t light; 1.775 t standard; 2.031 t normal; 2.236 t full load


Dimensions: Length overall / water x beam x draught
363,58 ft / 344,49 ft x 29,86 ft x 16,08 ft (normal load)
110,82 m / 105,00 m x 9,10 m x 4,90 m


Armament:
2 - 4,00" / 102 mm guns (1x2 guns), 32,00lbs / 14,51kg shells, 1917 Model
Quick firing guns in deck mount
on centreline forward
24 - 2,76" / 70,0 mm guns (12x2 guns), 10,47lbs / 4,75kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, all amidships
48 - 0,79" / 20,0 mm guns (12x4 guns), 0,24lbs / 0,11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 6 raised mounts
8 - 0,79" / 20,0 mm guns (2 mounts), 0,24lbs / 0,11kg shells, 1932 Model
Quick firing guns in deck mounts
on side, all forward, 2 raised guns - superfiring
6 - 2,76" / 70,0 mm guns (3x2 guns), 10,47lbs / 4,75kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, 1 raised mount - superfiring
Weight of broadside 392 lbs / 178 kg
Shells per gun, main battery: 250
4 - 21,0" / 533,4 mm above water torpedoes


Armour:
- Gun armour:Face (max)Other gunhouse (avg)Barbette/hoist (max)
Main:1,97" / 50 mm0,79" / 20 mm -
2nd:0,79" / 20 mm - -
3rd:0,79" / 20 mm - -
4th:0,79" / 20 mm0,04" / 1 mm -
5th:0,79" / 20 mm - -


- Conning tower: 1,57" / 40 mm


Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 43.842 shp / 32.706 Kw = 33,00 kts
Range 7.800nm at 12,00 kts
Bunker at max displacement = 461 tons


Complement:
150 - 196


Cost:
£0,726 million / $2,906 million


Distribution of weights at normal displacement:
Armament: 49 tons, 2,4 %
Armour: 27 tons, 1,3 %
- Belts: 0 tons, 0,0 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 21 tons, 1,1 %
- Armour Deck: 0 tons, 0,0 %
- Conning Tower: 5 tons, 0,3 %
Machinery: 1.074 tons, 52,9 %
Hull, fittings & equipment: 435 tons, 21,4 %
Fuel, ammunition & stores: 369 tons, 18,2 %
Miscellaneous weights: 76 tons, 3,8 %


Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
355 lbs / 161 Kg = 11,1 x 4,0 " / 102 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,37
Metacentric height 1,4 ft / 0,4 m
Roll period: 10,5 seconds
Steadiness- As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0,44
Seaboat quality (Average = 1.00): 1,17


Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,430
Length to Beam Ratio: 11,54 : 1
'Natural speed' for length: 18,56 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 60
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 13,12 ft / 4,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem:16,40 ft / 5,00 m
- Forecastle (20 %):16,40 ft / 5,00 m
- Mid (50 %):13,12 ft / 4,00 m
- Quarterdeck (15 %):13,12 ft / 4,00 m
- Stern:13,12 ft / 4,00 m
- Average freeboard:14,27 ft / 4,35 m
Ship tends to be wet forward


Ship space, strength and comments:
Space- Hull below water (magazines/engines, low = better): 195,1 %
- Above water (accommodation/working, high = better): 83,3 %
Waterplane Area: 6.458 Square feet or 600 Square metres
Displacement factor (Displacement / loading): 59 %
Structure weight / hull surface area: 28 lbs/sq ft or 138 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,43
- Longitudinal: 2,04
- Overall: 0,50
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform