WesWorld

I've updated the drawing, widening and shortening the flight deck. The deck is slightly off center to port, balanced by the funnels. Removed the second elevator. As for the airgroup, a mix of fighters and scouts. Might take a few minutes for the new version of the drawing to show.

Intended as small scout carriers.

USS Sackets Harbor, United States Aircraft Carrier laid down 1924

Displacement:
9,604 t light; 9,848 t standard; 11,010 t normal; 11,940 t full load

Dimensions: Length overall / water x beam x draught
560.48 ft / 552.00 ft x 56.00 ft (Bulges 65.00 ft) x 20.00 ft (normal load)
170.83 m / 168.25 m x 17.07 m (Bulges 19.81 m) x 6.10 m

Armament:
4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1924 Model
Breech loading guns in deck mounts
on side ends, evenly spread
2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1924 Model
Breech loading guns in deck mounts
on side, all forward
Weight of broadside 277 lbs / 126 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 473.00 ft / 144.17 m 8.98 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 132 % of normal length

- Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 124,652 shp / 92,991 Kw = 34.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 2,092 tons

Complement:
536 - 698

Cost:
£2.906 million / $11.622 million

Distribution of weights at normal displacement:
Armament: 35 tons, 0.3 %
Armour: 936 tons, 8.5 %
- Belts: 510 tons, 4.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 394 tons, 3.6 %
- Conning Tower: 32 tons, 0.3 %
Machinery: 4,106 tons, 37.3 %
Hull, fittings & equipment: 3,677 tons, 33.4 %
Fuel, ammunition & stores: 1,406 tons, 12.8 %
Miscellaneous weights: 850 tons, 7.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,066 lbs / 3,659 Kg = 129.1 x 5.0 " / 127 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 3.2 ft / 1.0 m
Roll period: 15.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.537
Length to Beam Ratio: 8.49 : 1
'Natural speed' for length: 23.49 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: -4.00 ft / -1.22 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 34.00 ft / 10.36 m
- Forecastle (7 %): 28.00 ft / 8.53 m
- Mid (50 %): 21.87 ft / 6.67 m
- Quarterdeck (7 %): 19.25 ft / 5.87 m
- Stern: 19.25 ft / 5.87 m
- Average freeboard: 23.04 ft / 7.02 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 131.7 %
- Above water (accommodation/working, high = better): 156.9 %
Waterplane Area: 21,312 Square feet or 1,980 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 91 lbs/sq ft or 443 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.19
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

30 Aircraft

Very nice. :o) Based on the four stackers?

Very interesting design, two concerns however. First and formost her flightdeck, forward and aft, looks very delecate, being extended all the way to the bows and stern. I would think that this would be cliped off some what to improve its rigidity, at the very least after a few good runs in high sea's after completetion (be it by nature or the builders!)

Secondly she has a very narrow flightdeck midships which I would think could be extended somewhat outward on the port side.

Other than that shes a handsome devil! Don't let Tiornu hear you say that about an Omaha class!

Very light and flimsy flight deck. Chances of carrying 30 aircraft would be extremely slim. Having two lifts takes up a lot of room for storing planes. A deck park? Impossible considering how small she is. I'm missing a conning tower somewhere as well.

It looks like the bridge is under the flight deck forward - a number of early carriers had this arrangement, but the flight deck didn't extend as far forward.

You really do need some sort of conning station above the flight deck that allows the conning officer to visually monitor the flight deck operations, the landing patterns of the aircraft. You also need a higher, unobstructed location for look out positions - since this is before radar

Well, a refit to add a small island is a distinct possibility.

There have been some disadvantages found with the design of the Sacket's Harbor class carriers related to ship and air group control and sea keeping. As a result, the Navy has announced plans to modify the ships in 1928. The current bridge will be removed and replaced with a small island. The large overhang aft will be reduced with added maintenance and crew spaces. The hanger will be extended forward as well into the former bridge area. Some ballasting will be required to counter the weight of the island and flight deck extension to starboard.


USS Sackets Harbor, United States Aircraft Carrier laid down 1924

Displacement:
9,778 t light; 10,029 t standard; 11,203 t normal; 12,142 t full load

Dimensions: Length overall / water x beam x draught
560.48 ft / 552.00 ft x 56.00 ft (Bulges 65.00 ft) x 20.35 ft (normal load)
170.83 m / 168.25 m x 17.07 m (Bulges 19.81 m) x 6.20 m

Armament:
4 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1924 Model
Breech loading guns in deck mounts
on side ends, evenly spread
4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1924 Model
Breech loading guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 304 lbs / 138 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 474.00 ft / 144.48 m 8.98 ft / 2.74 m
Ends: Unarmoured
Main Belt covers 132 % of normal length

- Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 125,969 shp / 93,973 Kw = 34.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 2,112 tons

Complement:
543 - 707

Cost:
£2.952 million / $11.808 million

Distribution of weights at normal displacement:
Armament: 38 tons, 0.3 %
Armour: 938 tons, 8.4 %
- Belts: 511 tons, 4.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 394 tons, 3.5 %
- Conning Tower: 32 tons, 0.3 %
Machinery: 4,149 tons, 37.0 %
Hull, fittings & equipment: 3,703 tons, 33.1 %
Fuel, ammunition & stores: 1,424 tons, 12.7 %
Miscellaneous weights: 950 tons, 8.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
8,048 lbs / 3,651 Kg = 128.8 x 5.0 " / 127 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 3.2 ft / 1.0 m
Roll period: 15.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.537
Length to Beam Ratio: 8.49 : 1
'Natural speed' for length: 23.49 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 14.00 degrees
Stern overhang: -4.00 ft / -1.22 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 34.00 ft / 10.36 m
- Forecastle (7 %): 28.00 ft / 8.53 m
- Mid (50 %): 21.87 ft / 6.67 m
- Quarterdeck (7 %): 19.25 ft / 5.87 m
- Stern: 19.25 ft / 5.87 m
- Average freeboard: 23.04 ft / 7.02 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 131.9 %
- Above water (accommodation/working, high = better): 154.9 %
Waterplane Area: 21,312 Square feet or 1,980 Square metres
Displacement factor (Displacement / loading): 107 %
Structure weight / hull surface area: 91 lbs/sq ft or 445 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.19
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

30 Aircraft

Very nice!