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1 | Ulsang-Class, Seondok County Armored Cruiser laid down 1895 | |
2 | ||
3 | Displacement: | |
4 | - | 10,258 t light; 10,798 t standard; 11,691 t normal; 12,405 t full load |
4 | + | 10,173 t light; 10,800 t standard; 11,625 t normal; 12,285 t full load |
5 | ||
6 | Dimensions: Length (overall / waterline) x beam x draught (normal/deep) | |
7 | - | (536.42 ft / 524.93 ft) x 80.38 ft x (17.22 / 18.06 ft) |
7 | + | (421.59 ft / 410.11 ft) x 82.02 ft x (24.61 / 25.64 ft) |
8 | - | (163.50 m / 160.00 m) x 24.50 m x (5.25 / 5.51 m) |
8 | + | (128.50 m / 125.00 m) x 25.00 m x (7.50 / 7.82 m) |
9 | ||
10 | Armament: | |
11 | - | 8 - 8.07" / 205 mm 45.0 cal guns - 265.11lbs / 120.25kg shells, 125 per gun |
11 | + | 2 - 8.07" / 205 mm 45.0 cal guns - 265.10lbs / 120.25kg shells, 150 per gun |
12 | - | Breech loading guns in deck and hoist mounts, 1892 Model |
12 | + | Breech loading guns in turret on barbette mounts, 1892 Model |
13 | 2 x Single mounts on centreline, evenly spread | |
14 | - | 6 x Single mounts on sides, evenly spread |
14 | + | |
15 | Quick firing guns in casemate mounts, 1890 Model | |
16 | - | Quick firing guns in deck mounts, 1890 Model |
16 | + | |
17 | 8 hull mounts in casemates- Limited use in all but light seas | |
18 | 14 - 3.44" / 87.5 mm 40.0 cal guns - 19.60lbs / 8.89kg shells, 400 per gun | |
19 | - | 14 - 3.44" / 87.5 mm 40.0 cal guns - 19.60lbs / 8.89kg shells, 300 per gun |
19 | + | |
20 | 14 x Single mounts on sides, evenly spread | |
21 | 16 - 1.77" / 45.0 mm 20.0 cal guns - 2.49lbs / 1.13kg shells, 750 per gun | |
22 | Quick firing guns in deck mounts, 1894 Model | |
23 | 4 x 2 row quad mounts on sides, evenly spread | |
24 | 4 raised mounts | |
25 | - | Weight of broadside 3,306 lbs / 1,500 kg |
25 | + | 8 - 8.07" / 205 mm 45.0 cal guns - 265.10lbs / 120.25kg shells, 150 per gun |
26 | Breech loading guns in casemate mounts, 1892 Model | |
27 | 8 x Single mounts on sides, evenly spread | |
28 | Weight of broadside 3,837 lbs / 1,740 kg | |
29 | Main Torpedoes | |
30 | 4 - 19.7" / 500 mm, 9.84 ft / 3.00 m torpedoes - 0.366 t each, 1.462 t total | |
31 | submerged bow & stern tubes | |
32 | 2nd Torpedoes | |
33 | 8 - 19.7" / 500 mm, 9.84 ft / 3.00 m torpedoes - 0.366 t each, 2.925 t total | |
34 | below water reloads | |
35 | - | Main: 5.91" / 150 mm 377.30 ft / 115.00 m 10.76 ft / 3.28 m |
35 | + | |
36 | - | Ends: 2.95" / 75 mm 147.64 ft / 45.00 m 10.76 ft / 3.28 m |
36 | + | |
37 | - | Upper: 2.95" / 75 mm 377.30 ft / 115.00 m 8.01 ft / 2.44 m |
37 | + | |
38 | - | Main Belt covers 111 % of normal length |
38 | + | Main: 7.09" / 180 mm 314.96 ft / 96.00 m 10.86 ft / 3.31 m |
39 | Ends: 2.95" / 75 mm 95.14 ft / 29.00 m 10.86 ft / 3.31 m | |
40 | Upper: 5.91" / 150 mm 314.96 ft / 96.00 m 8.01 ft / 2.44 m | |
41 | - | 1.18" / 30 mm 377.30 ft / 115.00 m 16.08 ft / 4.90 m |
41 | + | Main Belt covers 118 % of normal length |
42 | - | Beam between torpedo bulkheads 67.26 ft / 20.50 m |
42 | + | Main Belt inclined 5.00 degrees (positive = in) |
43 | ||
44 | - Torpedo Bulkhead - Strengthened structural bulkheads: | |
45 | - | Main: 7.87" / 200 mm 3.94" / 100 mm 5.91" / 150 mm |
45 | + | 1.18" / 30 mm 314.96 ft / 96.00 m 21.52 ft / 6.56 m |
46 | - | 2nd: 2.95" / 75 mm 0.98" / 25 mm - |
46 | + | Beam between torpedo bulkheads 72.18 ft / 22.00 m |
47 | ||
48 | - Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max) | |
49 | Main: 7.87" / 200 mm 3.94" / 100 mm 7.09" / 180 mm | |
50 | 2nd: 6.10" / 155 mm 0.98" / 25 mm 6.10" / 155 mm | |
51 | 3rd: 2.95" / 75 mm 0.98" / 25 mm - | |
52 | - | Forecastle: 0.98" / 25 mm Quarter deck: 0.98" / 25 mm |
52 | + | |
53 | 5th: 7.87" / 200 mm 3.94" / 100 mm 7.09" / 180 mm | |
54 | ||
55 | - Armoured deck - multiple decks: | |
56 | For and Aft decks: 1.97" / 50 mm | |
57 | Forecastle: 1.97" / 50 mm Quarter deck: 1.97" / 50 mm | |
58 | - | Direct drive, 4 shafts, 14,172 ihp / 10,572 Kw = 19.00 kts |
58 | + | |
59 | - Conning towers: Forward 7.87" / 200 mm, Aft 0.00" / 0 mm | |
60 | - | Bunker at max displacement = 1,607 tons (100% coal) |
60 | + | |
61 | Machinery: | |
62 | Coal fired boilers, complex reciprocating steam engines, | |
63 | - | 561 - 730 |
63 | + | Direct drive, 4 shafts, 17,780 ihp / 13,264 Kw = 20.00 kts |
64 | Range 5,000nm at 10.00 kts | |
65 | Bunker at max displacement = 1,484 tons (100% coal) | |
66 | - | £0.944 million / $3.775 million |
66 | + | |
67 | Complement: | |
68 | 559 - 727 | |
69 | - | Armament: 740 tons, 6.3 % |
69 | + | |
70 | - | - Guns: 733 tons, 6.3 % |
70 | + | |
71 | £0.977 million / $3.907 million | |
72 | - | Armour: 3,450 tons, 29.5 % |
72 | + | |
73 | - | - Belts: 1,565 tons, 13.4 % |
73 | + | |
74 | - | - Torpedo bulkhead: 265 tons, 2.3 % |
74 | + | Armament: 643 tons, 5.5 % |
75 | - | - Armament: 540 tons, 4.6 % |
75 | + | - Guns: 637 tons, 5.5 % |
76 | - | - Armour Deck: 993 tons, 8.5 % |
76 | + | |
77 | Armour: 3,635 tons, 31.3 % | |
78 | - | Machinery: 2,402 tons, 20.5 % |
78 | + | - Belts: 1,790 tons, 15.4 % |
79 | - | Hull, fittings & equipment: 3,566 tons, 30.5 % |
79 | + | - Torpedo bulkhead: 296 tons, 2.5 % |
80 | - | Fuel, ammunition & stores: 1,433 tons, 12.3 % |
80 | + | - Armament: 645 tons, 5.5 % |
81 | - | Miscellaneous weights: 100 tons, 0.9 % |
81 | + | - Armour Deck: 817 tons, 7.0 % |
82 | - Conning Tower: 87 tons, 0.7 % | |
83 | Machinery: 3,014 tons, 25.9 % | |
84 | Hull, fittings & equipment: 2,730 tons, 23.5 % | |
85 | Fuel, ammunition & stores: 1,452 tons, 12.5 % | |
86 | - | 17,383 lbs / 7,885 Kg = 66.1 x 8.1 " / 205 mm shells or 10.6 torpedoes |
86 | + | Miscellaneous weights: 150 tons, 1.3 % |
87 | - | Stability (Unstable if below 1.00): 1.62 |
87 | + | - On freeboard deck: 50 tons |
88 | - | Metacentric height 8.1 ft / 2.5 m |
88 | + | |
89 | - | Roll period: 11.9 seconds |
89 | + | |
90 | - | Steadiness - As gun platform (Average = 50 %): 69 % |
90 | + | |
91 | - | - Recoil effect (Restricted arc if above 1.00): 0.15 |
91 | + | |
92 | - | Seaboat quality (Average = 1.00): 1.38 |
92 | + | 12,917 lbs / 5,859 Kg = 49.1 x 8.1 " / 205 mm shells or 8.1 torpedoes |
93 | Stability (Unstable if below 1.00): 1.80 | |
94 | Metacentric height 9.6 ft / 2.9 m | |
95 | Roll period: 11.1 seconds | |
96 | Steadiness - As gun platform (Average = 50 %): 80 % | |
97 | - | Block coefficient (normal/deep): 0.563 / 0.570 |
97 | + | - Recoil effect (Restricted arc if above 1.00): 0.11 |
98 | - | Length to Beam Ratio: 6.53 : 1 |
98 | + | Seaboat quality (Average = 1.00): 1.59 |
99 | - | 'Natural speed' for length: 22.91 kts |
99 | + | |
100 | - | Power going to wave formation at top speed: 38 % |
100 | + | |
101 | Hull has a flush deck, | |
102 | a ram bow and a cruiser stern | |
103 | Block coefficient (normal/deep): 0.492 / 0.498 | |
104 | Length to Beam Ratio: 5.00 : 1 | |
105 | 'Natural speed' for length: 20.25 kts | |
106 | - | - Forecastle: 20.00 %, 22.97 ft / 7.00 m, 19.69 ft / 6.00 m |
106 | + | Power going to wave formation at top speed: 51 % |
107 | - | - Forward deck: 30.00 %, 19.69 ft / 6.00 m, 13.12 ft / 4.00 m |
107 | + | |
108 | Bow angle (Positive = bow angles forward): -4.00 degrees | |
109 | Stern overhang: 3.28 ft / 1.00 m | |
110 | - | - Average freeboard: 15.81 ft / 4.82 m |
110 | + | |
111 | Fore end, Aft end | |
112 | - Forecastle: 20.00 %, 19.69 ft / 6.00 m, 16.40 ft / 5.00 m | |
113 | - Forward deck: 30.00 %, 16.40 ft / 5.00 m, 13.12 ft / 4.00 m | |
114 | - | Space - Hull below water (magazines/engines, low = better): 105.5 % |
114 | + | |
115 | - | - Above water (accommodation/working, high = better): 148.1 % |
115 | + | |
116 | - | Waterplane Area: 29,808 Square feet or 2,769 Square metres |
116 | + | - Average freeboard: 14.66 ft / 4.47 m |
117 | - | Displacement factor (Displacement / loading): 109 % |
117 | + | |
118 | - | Structure weight / hull surface area: 112 lbs/sq ft or 546 Kg/sq metre |
118 | + | |
119 | Ship space, strength and comments: | |
120 | - | - Cross-sectional: 0.99 |
120 | + | Space - Hull below water (magazines/engines, low = better): 117.1 % |
121 | - | - Longitudinal: 1.02 |
121 | + | - Above water (accommodation/working, high = better): 105.2 % |
122 | Waterplane Area: 22,241 Square feet or 2,066 Square metres | |
123 | - | Adequate machinery, storage, compartmentation space |
123 | + | Displacement factor (Displacement / loading): 99 % |
124 | - | Excellent accommodation and workspace room |
124 | + | Structure weight / hull surface area: 113 lbs/sq ft or 552 Kg/sq metre |
125 | - | Good seaboat, rides out heavy weather easily |
125 | + | |
126 | - Cross-sectional: 0.92 | |
127 | - Longitudinal: 2.07 | |
128 | - Overall: 1.00 | |
129 | Cramped machinery, storage, compartmentation space | |
130 | Adequate accommodation and workspace room | |
131 | Ship has slow, easy roll, a good, steady gun platform | |
132 | Excellent seaboat, comfortable, can fire her guns in the heaviest weather | |
133 | ||
134 |