A Bug?

I tried my first design in Springsharp 3.0 Beta. I wanted to see how the GB/CB/1905 designwould work. The one thing that I see is that despite the fact that I have the engine date set to 1909, the program is using 1898 for the drive date and is complaining, as that would a rather edgy date for a turbine-powered ship. I like the freeboard page and the gun pages, as they are an improvement over what we had before. The ship is a classic design from my friend Cliff, dating from 1971:

This is the Springsharp report:

GB/CB/1905, Great Britain Battlecruiser laid down 1905 (Engine 1909)

Displacement:
    24,982 t light; 25,799 t standard; 28,577 t normal; 30,800 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
    (770.00 ft / 770.00 ft) x 85.00 ft x (27.00 / 28.68 ft)
    (234.70 m / 234.70 m) x 25.91 m  x (8.23 / 8.74 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 850.00lbs / 385.55kg shells, 90 per gun
      Breech loading guns in turret on barbette mounts , 1905 Model
      2 x Single mounts on centreline ends, evenly spread
        2 raised mounts
      9 - 6.00" / 152 mm 45.0 cal guns - 100.00lbs / 45.36kg shells, 150 per gun
      Breech loading guns in deck mounts , 1905 Model
      1 x Single mount on centreline, aft evenly spread
      8 x Single mounts on sides, evenly spread
        8 raised mounts
    Weight of broadside 4,300 lbs / 4,300 kg

Armour:
   - Belts:        Width (max)    Length (avg)        Height (avg)
    Main:    4.00" / 102 mm    540.00 ft / 164.59 m    16.00 ft / 4.88 m
    Ends:    Unarmoured
      Main Belt covers 108 % of normal length
      Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
        2.00" / 51 mm    540.00 ft / 164.59 m    27.00 ft / 8.23 m

   - Gun armour:    Face (max)    Other gunhouse (avg)    Barbette/hoist (max)
    Main:    8.00" / 203 mm    6.00" / 152 mm        8.00" / 203 mm

   - Armour deck: 2.00" / 51 mm, Conning tower: 8.00" / 203 mm

Machinery:
    Oil fired boilers, steam turbines,
    ERROR: Revise drives, 4 shafts, 193,771 shp / 144,553 Kw = 34.00 kts
    Range 6,500nm at 15.00 kts
    Bunker at max displacement = 5,001 tons

Complement:
    1,098 - 1,428

Cost:
    £2.479 million / $9.917 million

Distribution of weights at normal displacement:
    Armament: 908 tons, 3.2 %
    Armour: 5,293 tons, 18.5 %
       - Belts: 1,438 tons, 5.0 %
       - Torpedo bulkhead: 1,079 tons, 3.8 %
       - Armament: 900 tons, 3.1 %
       - Armour Deck: 1,716 tons, 6.0 %
       - Conning Tower: 161 tons, 0.6 %
    Machinery: 8,808 tons, 30.8 %
    Hull, fittings & equipment: 10,439 tons, 36.5 %
    Fuel, ammunition & stores: 3,595 tons, 12.6 %
    Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
    Survivability (Non-critical penetrating hits needed to sink ship):
      29,879 lbs / 13,553 Kg = 34.6 x 12.0 " / 305 mm shells or 3.4 torpedoes
    Stability (Unstable if below 1.00): 1.30
    Metacentric height 6.3 ft / 1.9 m
    Roll period: 14.3 seconds
    Steadiness    - As gun platform (Average = 50 %): 58 %
            - Recoil effect (Restricted arc if above 1.00): 0.36
    Seaboat quality  (Average = 1.00): 1.16

Hull form characteristics:
    Hull has low quarterdeck ,
      a normal bow and a cruiser stern
    Block coefficient (normal/deep): 0.566 / 0.574
    Length to Beam Ratio: 9.06 : 1
    'Natural speed' for length: 27.75 kts
    Power going to wave formation at top speed: 56 %
    Trim (Max stability = 0, Max steadiness = 100): 50
    Bow angle (Positive = bow angles forward): -2.00 degrees
    Stern overhang: -2.00 ft / -0.61 m
    Freeboard (% = length of deck as a percentage of waterline length):
                Fore end,     Aft end
       - Forecastle:    30.00 %,  32.00 ft / 9.75 m,  28.00 ft / 8.53 m
       - Forward deck:    30.00 %,  28.00 ft / 8.53 m,  28.00 ft / 8.53 m
       - Aft deck:    7.00 %,  28.00 ft / 8.53 m,  28.00 ft / 8.53 m
       - Quarter deck:    33.00 %,  20.00 ft / 6.10 m,  22.00 ft / 6.71 m
       - Average freeboard:        26.17 ft / 7.98 m

Ship space, strength and comments:
    Space    - Hull below water (magazines/engines, low = better): 146.4 %
        - Above water (accommodation/working, high = better): 225.2 %
    Waterplane Area: 46,368 Square feet or 4,308 Square metres
    Displacement factor (Displacement / loading): 108 %
    Structure weight / hull surface area: 147 lbs/sq ft or 718 Kg/sq metre
    Hull strength (Relative):
        - Cross-sectional: 0.98
        - Longitudinal: 1.27
        - Overall: 1.00
    Hull space for machinery, storage, compartmentation is cramped
    Room for accommodation and workspaces is excellent