Tokka class (Octavia)

Tokka Class SPQO:Navy Aviso/Sloop laid down 1904
== Displacement: ==
727 t light; 756 t standard; 855 t normal; 934 t full load
=== Dimensions: Length (overall / waterline) x beam x draught (normal/deep) ===
(189.30 ft / 180.45 ft) x 22.97 ft x (13.12 / 14.08 ft)
(57.70 m / 55.00 m) x 7.00 m  x (4.00 / 4.29 m)
== Armament: ==
      3 - 4.02" / 102 mm 45.0 cal guns - 32.65lbs / 14.81kg shells, 150 per gun
  Quick firing guns in deck mounts, 1900 Model
  1 x Single mount on centreline, forward deck forward
  2 x Single mounts on centreline, aft evenly spread
      4 - 2.24" / 57.0 mm 39.0 cal guns - 5.39lbs / 2.44kg shells, 300 per gun
  Quick firing guns in deck mounts, 1900 Model
  4 x 2-gun mounts on sides, aft deck forward
      4 - 0.30" / 7.5 mm 45.0 cal guns - 0.01lbs / 0.01kg shells, 2,000 per gun
  Machine guns in deck mounts, 1904 Model
  1 x 2-gun mount on sides, aft deck forward
  1 x 2-gun mount on sides, forward deck aft
      Weight of broadside 120 lbs / 54 kg
== Armour: ==
   - Gun armour:	Face (max)	Other gunhouse (avg)	Barbette/hoist (max)
Main:	1.57" / 40 mm	2.24" / 57 mm		      -
2nd:	1.18" / 30 mm	      -			      -
===   - Protected deck - single deck: ===
For and Aft decks: 1.65" / 42 mm
Forecastle: 0.91" / 23 mm  Quarter deck: 0.91" / 23 mm
== Machinery: ==
Coal fired boilers, steam turbines, 
Direct drive, 2 shafts, 3,295 shp / 2,458 Kw = 18.20 kts
Range 2,500nm at 10.00 kts
Bunker at max displacement = 178 tons (100% coal)
== Complement: ==
78 - 102
== Cost: ==
£0.077 million / $0.307 million
=== Distribution of weights at normal displacement: ===
Armament: 21 tons, 2.5 %
   - Guns: 21 tons, 2.5 %
Armour: 132 tons, 15.4 %
   - Armament: 50 tons, 5.9 %
   - Armour Deck: 82 tons, 9.6 %
Machinery: 326 tons, 38.1 %
Hull, fittings & equipment: 227 tons, 26.6 %
Fuel, ammunition & stores: 128 tons, 14.9 %
Miscellaneous weights: 21 tons, 2.5 %
   - Hull below water: 5 tons
   - Hull above water: 8 tons
   - On freeboard deck: 6 tons
   - Above deck: 2 tons
=== Overall survivability and seakeeping ability: ===
Survivability (Non-critical penetrating hits needed to sink ship):
  561 lbs / 255 Kg = 17.3 x 4.0 " / 102 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.29
Metacentric height 0.9 ft / 0.3 m
Roll period: 10.3 seconds
Steadiness	- As gun platform (Average = 50 %): 88 %
- Recoil effect (Restricted arc if above 1.00): 0.36
Seaboat quality  (Average = 1.00): 1.75
Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak,
  a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.550 / 0.560
Length to Beam Ratio: 7.86 : 1
'Natural speed' for length: 13.43 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 1.97 ft / 0.60 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end,	 Aft end
   - Forecastle:	20.00 %,  14.76 ft / 4.50 m,  12.80 ft / 3.90 m
   - Forward deck:	30.00 %,  12.14 ft / 3.70 m,  10.93 ft / 3.33 m
   - Aft deck:	35.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
   - Quarter deck:	15.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
   - Average freeboard:		11.10 ft / 3.38 m
Ship tends to be wet forward
Ship space, strength and comments:
Space	- Hull below water (magazines/engines, low = better): 132.3 %
- Above water (accommodation/working, high = better): 73.3 %
Waterplane Area: 2,892 Square feet or 269 Square metres
Displacement factor (Displacement / loading): 99 %
Structure weight / hull surface area: 36 lbs/sq ft or 176 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.82
- Longitudinal: 5.88
- Overall: 1.00
Cramped machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
== Extras and notes: ==
* Above Deck weight is the antenna mast for a wireless set
* Deck weight is wireless equipment as well as extra rescue equipment
* Spare supplies for rescue and search are included in hull storage. 
* Additional Balast is included below water. 
* Extra above waterline and on deck weight includes facilities for headquarters staff and addtional wirless sets for command and control
*Designed by Tokkaido but built in Octavian Yards.
Category:Ship
Category:Octavia
Category:Sloop
Category:Aviso