WesWorld

Quoted

Xue Long, China Research Vessel laid down 1945

Displacement:
2.634 t light; 2.736 t standard; 3.352 t normal; 3.845 t full load

Dimensions: Length overall / water x beam x draught
328,00 ft / 308,40 ft x 50,20 ft x 13,78 ft (normal load)
99,97 m / 94,00 m x 15,30 m x 4,20 m

Armament:
3 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1945 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority aft, 1 raised mount aft
4 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all aft, all raised mounts - superfiring
2 - 0,31" / 7,9 mm guns in single mounts, 0,02lbs / 0,01kg shells, 1945 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 112 lbs / 51 kg
Shells per gun, main battery: 550

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,98" / 25 mm 0,39" / 10 mm -

Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 6.090 shp / 4.543 Kw = 18,00 kts
Range 12.000nm at 14,00 kts
Bunker at max displacement = 1.108 tons

Complement:
219 - 286

Cost:
£0,867 million / $3,468 million

Distribution of weights at normal displacement:
Armament: 14 tons, 0,4%
Armour: 5 tons, 0,2%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 5 tons, 0,2%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 154 tons, 4,6%
Hull, fittings & equipment: 1.060 tons, 31,6%
Fuel, ammunition & stores: 718 tons, 21,4%
Miscellaneous weights: 1.400 tons, 41,8%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6.147 lbs / 2.788 Kg = 174,0 x 4,1 " / 105 mm shells or 1,7 torpedoes
Stability (Unstable if below 1.00): 1,07
Metacentric height 2,0 ft / 0,6 m
Roll period: 14,7 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0,06
Seaboat quality (Average = 1.00): 1,81

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,550
Length to Beam Ratio: 6,14 : 1
'Natural speed' for length: 17,56 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 17,00 degrees
Stern overhang: 11,98 ft / 3,65 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24,93 ft / 7,60 m
- Forecastle (10%): 23,13 ft / 7,05 m
- Mid (26%): 21,49 ft / 6,55 m (11,98 ft / 3,65 m aft of break)
- Quarterdeck (15%): 11,98 ft / 3,65 m
- Stern: 13,45 ft / 4,10 m
- Average freeboard: 14,93 ft / 4,55 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 65,2%
- Above water (accommodation/working, high = better): 133,2%
Waterplane Area: 10.804 Square feet or 1.004 Square metres
Displacement factor (Displacement / loading): 184%
Structure weight / hull surface area: 66 lbs/sq ft or 324 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1,00
- Longitudinal: 2,31
- Overall: 1,09
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

Breakdown of Misc. Weight: 1400 tons
240 tons reserved for survey / research crew quarters - @ 4 tons per person
270 tons for laboratory
200 tons additional fresh water storage
200 tons additional food storage
173 tons scientific equipment storage
80 tons for cinema,library, lounges and other recreational facilities
50 tons refrigerating hold
50 tons for workshop
50 tons for additional deck handling gear - cranes, winches, sounding gear - and echo sounding equipment
50 tons for electronic equipment (radar, sonar)
27 tons for climate control system
10 tons for additional diesel generators

Quoted from "parador"

Machinery:
Diesel Internal combustion engines plus batteries,

Quoted from "Brockpaine"

Quoted from "parador"

Machinery:
Diesel Internal combustion engines plus batteries,

lolwut?

Also, why is it so heavily armed?

Quoted from "BruceDuncan"

I note that Bharat has transferred "a large quantity of ships" to China in exchange for the 14,500 tons of material sent in the other direction. Have the particular vessels in question be noted anywhere? The Bharat reports - at quick review - do not seem to indicate such.

Quoted from "Brockpaine"

Quoted from "parador"

Machinery:
Diesel Internal combustion engines plus batteries,

lolwut?
Also, why is it so heavily armed?

Quoted from "BruceDuncan"

I suspect that the batteries are intended to power the ship when it is researching whale-song...

Quoted from "parador"

About the armament: Researching, surveying and fisheries protection tasks in peacetime, in case of war with small modifications usable as minelayer

Quoted from "Brockpaine"

Quoted from "parador"

About the armament: Researching, surveying and fisheries protection tasks in peacetime, in case of war with small modifications usable as minelayer

Okay - but if the ship is armed, then other nations must treat it as a proper warship, which might be a bit of a hindrance to it during survey missions...