Finding itself with a bit of a surplus for Q4, the Marina de Filipinas has decided to acquire a Philippine & Pacific Steam Ship Co. interisland liner and refit her to operate as a Hospital Ship.
PRS Santa Maria, Filipino Hospital ship laid down 1921 (converted 1929)
Displacement:
7,674 t light; 7,868 t standard; 9,742 t normal; 11,242 t full load
Dimensions: Length overall / water x beam x draught
467.00 ft / 460.00 ft x 61.00 ft x 19.60 ft (normal load)
142.34 m / 140.21 m x 18.59 m x 5.97 m
Machinery:
Oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 6,828 ihp / 5,094 Kw = 16.00 kts
Range 17,500nm at 12.00 kts (Bunkerage = 3,373 tons)
Complement:
489 - 637
Cost:
£0.826 million / $3.304 million
Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 399 tons, 4.1 %
Hull, fittings & equipment: 2,774 tons, 28.5 %
Fuel, ammunition & stores: 2,069 tons, 21.2 %
Miscellaneous weights: 4,500 tons, 46.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15,409 lbs / 6,990 Kg = 142.7 x 6 " / 152 mm shells or 2.5 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 2.8 ft / 0.8 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.75
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.620
Length to Beam Ratio: 7.54 : 1
'Natural speed' for length: 21.45 kts
Power going to wave formation at top speed: 33 %
Trim (Max stability = 0, Max steadiness = 100): 28
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 7.00 ft / 2.13 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.50 ft / 7.16 m
- Forecastle (20 %): 17.50 ft / 5.33 m
- Mid (50 %): 15.00 ft / 4.57 m
- Quarterdeck (15 %): 15.00 ft / 4.57 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 16.36 ft / 4.99 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 64.3 %
- Above water (accommodation/working, high = better): 126.9 %
Waterplane Area: 20,909 Square feet or 1,942 Square metres
Displacement factor (Displacement / loading): 184 %
Structure weight / hull surface area: 90 lbs/sq ft or 442 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.16
- Longitudinal: 1.48
- Overall: 1.19
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, rides out heavy weather easily