What about 4 designs plan
Name: LBA-280
Number Of Engineers: 5
What It Is: A land based immovable large howitzer firing 280 mm rounds for defense of large cities and forts against advancing forces, and naval (if situated near coast) threats.
Weight: 87,360 lb (39,625.8 kg)
Length: 12.735 m (41 ft 9 in)
Barrel length: 12.006 (39 ft 5 in) L/50
Crew: 15? (guessing here.)
Shell: 650 lb (294.8 kg)
Calibre: 11 inches (280 mm)
Carriage: Static only
Elevation: -10 to +80
Traverse: 360
Rate of fire: 2 rpm
Muzzle velocity: 2860 ft/s (865 m/s)
Range: No bloody idea how to estimate this.
(may change caliber to 380mm or 420mm should that receive more support)
Pigeon
What is it: Light scout helicopter, with pilot and enough space to carry 150 kg cargo, or one gunner with TP-1 machinegun, should use mix of wood and light alloys for the hull.
8 novice engineers and metallurgist
TX-1
What is it: Basic level torpedo
1 novice engineer (we'll use more engineers to create more advanced, later.)
WASP
What is it: Torpedo boat, fast, lightly armored , armed with two twin T-1s (optimized for AA use) and 4 torpedo mountings, empty space for either depth charges or mine laying equipment. Capable to operate in both shalow waters and ocean
5 novice engineers
Such ship is deadly for landing crafts\ can offer AA protection for larger ships and may be used for mass attacks on larger ships
That's a bit spread out engineer wise, but we need all kinds of weapons, right?
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Brood, your 200mm guns are useless against tanks. It's a heavy siege weapon for destroying bunkers, tanks are too nimble and will fire back at the crew killing it before they have a chance to fire, unless they fire from pillbox, but then they can be avoided. TP-1s and LUPs can knock any tank that our enemy may have
And no to modular ship design, another bad idea, don't even want to expain why, Brood you are full of videogame logic