I read a Norwegian book about Norwegian warship, it was there that I read that the Navy had begun to build a new navy in 1935+, the construction planner was:
A new class of small destroyers: the Sleipner class
http://en.wikipedia.org/wiki/Sleipner_class_destroyer
A new class of fast torpedo boats: Do not remember the name right now.
And a new class of coastal defense ship off two ships: Norway was invaded before Norway had started built them, as Horten naval shipyards were busy building the last destroyer in the Sleipner class.
So I started thinking, How can this new class of coastal defense ship look like. I started to play with spring shape, the size of her is limited to the largest dock Navy had at that time (that I know of), note that cannons I have gone for is my suggestions on what she can be equipped with, so here it is only to make suggestions. (Note: this is possibly the largest ship built (in length that is) by Horten Naval shipyard for the Navy,
http://en.wikipedia.org/wiki/HNoMS_Olav_Tryggvason).
Here she is as if she was built in Norway, mostly with British guns. I could also do a version with Bofors guns since they use to have a faster loading time. I know that it has been built a number of guns in Norway but ..:
Bergen/Christiania, Norway coastal defence ship laid down 1940
Displacement:
5 798 t light; 6 098 t standard; 6 301 t normal; 6 462 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(319,36 ft / 311,68 ft) x 55,77 ft x (18,04 / 18,44 ft)
(97,34 m / 95,00 m) x 17,00 m x (5,50 / 5,62 m)
Bergen/Christiania, Norway coastal defence ship laid down 1940
Displacement:
5 786 t light; 6 098 t standard; 6 301 t normal; 6 462 t full load
Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(319,36 ft / 311,68 ft) x 55,77 ft x (18,04 / 18,44 ft)
(97,34 m / 95,00 m) x 17,00 m x (5,50 / 5,62 m)
Armament:
2 - 14,00" / 356 mm 45,0 cal guns - 1 383,70lbs / 627,64kg shells, 100 per gun
(Have here gone for 14"/45 (35.6 cm) Mark VII in twin mounts)
Breech loading guns in deck mounts, 1940 Model
2 x Twin mounts on centreline ends, evenly spread
2 - 6,00" / 152 mm 45,0 cal guns - 108,92lbs / 49,41kg shells, 200 per gun
(Have here gone for 6"/50 (15.2 cm) BL Mark XXIII in twin mounts)
Breech loading guns in deck mounts, 1940 Model
4 x Twin mounts on sides amidships
1 - 4,00" / 102 mm 45,0 cal gun - 32,27lbs / 14,64kg shells, 300 per gun
(Have here gone for 4"/45 (10.2 cm) QF HA Marks XVI, XVII, XVIII and XXI in singel mounts)
Breech loading gun in deck mounts, 1940 Model
2 x Single mounts on sides amidships
1 - 2,24" / 57,0 mm 45,0 cal gun - 5,70lbs / 2,59kg shells, 1 000 per gun
Breech loading gun in deck mounts, 1940 Model
4 x Single mounts on sides amidships
1 - 0,50" / 12,7 mm 45,0 cal gun - 0,06lbs / 0,03kg shells, 5 000 per gun
Breech loading gun in deck mounts, 1940 Model
6 x Single mounts on sides amidships
Weight of broadside 3 023 lbs / 1 371 kg
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 10,0" / 254 mm 202,59 ft / 61,75 m 8,96 ft / 2,73 m
Ends: 7,00" / 178 mm 109,07 ft / 33,24 m 8,96 ft / 2,73 m
Upper: 7,00" / 178 mm 202,59 ft / 61,75 m 8,00 ft / 2,44 m
Main Belt covers 100 % of normal length
- Torpedo Bulkhead:
10,0" / 254 mm 202,59 ft / 61,75 m 17,96 ft / 5,47 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7,50" / 191 mm 7,50" / 191 mm -
2nd: 6,00" / 152 mm 6,00" / 152 mm -
3rd: 2,00" / 51 mm 2,00" / 51 mm -
- Conning towers: Forward 8,00" / 203 mm, Aft 0,00" / 0 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 6 516 shp / 4 861 Kw = 16,00 kts
Range 3 000nm at 12,00 kts
Bunker at max displacement = 364 tons
Complement:
353 - 459
Cost:
£2,209 million / $8,835 million
Distribution of weights at normal displacement:
Armament: 309 tons, 4,9 %
Armour: 3 504 tons, 55,6 %
- Belts: 1 595 tons, 25,3 %
- Torpedo bulkhead: 1 346 tons, 21,4 %
- Armament: 505 tons, 8,0 %
- Conning Tower: 59 tons, 0,9 %
Machinery: 174 tons, 2,8 %
Hull, fittings & equipment: 1 798 tons, 28,5 %
Fuel, ammunition & stores: 515 tons, 8,2 %
Miscellaneous weights: 0 tons, 0,0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22 422 lbs / 10 171 Kg = 16,3 x 14,0 " / 356 mm shells or 8,1 torpedoes
Stability (Unstable if below 1.00): 1,50
Metacentric height 4,1 ft / 1,3 m
Roll period: 11,5 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0,40
Seaboat quality (Average = 1.00): 1,70
Hull form characteristics:
Hull has a flush deck,
a normal bow and small transom stern
Block coefficient (normal/deep): 0,703 / 0,706
Length to Beam Ratio: 5,59 : 1
'Natural speed' for length: 19,24 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 15,00 degrees
Stern overhang: 3,28 ft / 1,00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20,00 %, 16,40 ft / 5,00 m, 14,76 ft / 4,50 m
- Forward deck: 30,00 %, 14,76 ft / 4,50 m, 13,12 ft / 4,00 m
- Aft deck: 35,00 %, 13,12 ft / 4,00 m, 13,12 ft / 4,00 m
- Quarter deck: 15,00 %, 13,12 ft / 4,00 m, 14,76 ft / 4,50 m
- Average freeboard: 13,95 ft / 4,25 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 50,3 %
- Above water (accommodation/working, high = better): 104,5 %
Waterplane Area: 14 342 Square feet or 1 332 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 97 lbs/sq ft or 473 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,08
- Longitudinal: 2,46
- Overall: 1,18
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather