25 Laid Down - 25 Completed
RNS T-1
RNS T-2
RNS T-3
RNS T-4
RNS T-5
....
RNS T-25
QuoteEire, Ireland Torpedoboot laid down 1905 (Engine 1909)
Displacement:
100 t light; 103 t standard; 119 t normal; 132 t full load
Dimensions: Length overall / water x beam x draught
157,48 ft / 157,48 ft x 13,12 ft x 5,25 ft (normal load)
48,00 m / 48,00 m x 4,00 m x 1,60 m
Armament:
1 - 2,36" / 60,0 mm guns in single mounts, 6,61lbs / 3,00kg shells, 1905 Model
Quick firing gun in deck mount
on centreline aft
2 - 0,31" / 8,0 mm guns in single mounts, 0,02lbs / 0,01kg shells, 1905 Model
Machine guns in deck mounts
on side, all amidships
Weight of broadside 7 lbs / 3 kg
Shells per gun, main battery: 100
2 - 17,7" / 450 mm above water torpedoes
Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 3 226 shp / 2 406 Kw = 24,85 kts
Range 150nm at 24,85 kts
Bunker at max displacement = 29 tons (90% coal)
Complement:
17 - 23
Cost:
£0,013 million / $0,054 million
Distribution of weights at normal displacement:
Armament: 1 tons, 0,7 %
Machinery: 66 tons, 55,0 %
Hull, fittings & equipment: 32 tons, 26,8 %
Fuel, ammunition & stores: 19 tons, 15,8 %
Miscellaneous weights: 2 tons, 1,7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27 lbs / 12 Kg = 4,1 x 2,4 " / 60 mm shells or 0,1 torpedoes
Stability (Unstable if below 1.00): 1,18
Metacentric height 0,3 ft / 0,1 m
Roll period: 9,7 seconds
Steadiness - As gun platform (Average = 50 %): 49 %
- Recoil effect (Restricted arc if above 1.00): 0,08
Seaboat quality (Average = 1.00): 0,70
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,385
Length to Beam Ratio: 12,00 : 1
'Natural speed' for length: 12,55 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 0,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 8,20 ft / 2,50 m
- Forecastle (10 %): 7,94 ft / 2,42 m
- Mid (30 %): 4,92 ft / 1,50 m
- Quarterdeck (15 %): 4,92 ft / 1,50 m
- Stern: 4,92 ft / 1,50 m
- Average freeboard: 5,54 ft / 1,69 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 184,4 %
- Above water (accommodation/working, high = better): 39,6 %
Waterplane Area: 1 263 Square feet or 117 Square metres
Displacement factor (Displacement / loading): 36 %
Structure weight / hull surface area: 13 lbs/sq ft or 62 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 1,37
- Overall: 0,55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Caution: Lacks seaworthiness - very limited seakeeping ability