RC airboat 3D printing from LW-PLA (PolyLight 1.0), few parts are made of PLA, PETG and TPU.

print setting:

LW-PLA
(01) hullA
Layer Hight: 0.3mm
Perimeter Shells: 3
Top Solid Layers:3
Bottom Solid Layers: 3
Inflll: Gyroid 3%

(02) hullB
Layer Hight: 0.3mm
Perimeter Shells: 3
Top Solid Layers:3
Bottom Solid Layers: 3
Inflll: Gyroid 3%

(03) hullC
Layer Hight: 0.3mm
Perimeter Shells: 3
Top Solid Layers:3
Bottom Solid Layers: 3
Inflll: Gyroid 3%

(04) cockpit cover
Layer Hight: 0.3mm
Perimeter Shells: 2
Top Solid Layers:4
Bottom Solid Layers: 3
Inflll: Gyroid 3%

(05) propeller cover
Layer Hight: 0.3mm
Perimeter Shells: 2
Top Solid Layers:3
Bottom Solid Layers: 3
Inflll: Gyroid 5%

(06) motor mount A
Layer Hight: 0.3mm
Perimeter Shells: 2
Top Solid Layers:3
Bottom Solid Layers: 3
Inflll: Gyroid 10%

(07) rudder A1 (print3x)
Layer Hight: 0.3mm
Perimeter Shells: 2
Top Solid Layers:3
Bottom Solid Layers: 20
Inflll: Gyroid 5%

(08) rudder A2 (print3x)
Layer Hight: 0.3mm
Perimeter Shells: 2
Top Solid Layers:3
Bottom Solid Layers: 3
Inflll: Gyroid 5%

PLA
(09) trifle part
Layer Hight: 0.2mm
Perimeter Shells: 4
Top Solid Layers:6
Bottom Solid Layers: 6
Inflll: Gyroid 15%

(10) rudderwater
Layer Hight: 0.2mm
Perimeter Shells: 6
Top Solid Layers:5
Bottom Solid Layers: 5
Inflll: Gyroid 50%

(11) engine wire cover
Layer Hight: 0.15mm
Perimeter Shells: 2
Top Solid Layers:6
Bottom Solid Layers: 5
Inflll: Gyroid 15%

PETG
(12) motor mount B
Layer Hight: 0.2mm
Perimeter Shells: 3
Top Solid Layers:5
Bottom Solid Layers: 5
Inflll: Gyroid 30%

TPU (flex)
(13) rudder (flex)
Layer Hight: 0.2mm
Perimeter Shells: 3
Top Solid Layers:5
Bottom Solid Layers: 5
Inflll: Gyroid 15%

Hardware you need:
3x M2x10 screws (for mounting the rudder)
3x M2 nuts (for mounting the rudder)
3x M3x10 screws (for mounting the watter rudder)
3x M3 nuts (for mounting the watter rudder)
4x screws for the motors (according to motor)
8x magnet 6x2mm (for fixing the cockpit)
1x motor
1x propeller
1x ESC
1x battery
1x servo
CA glue
resin (coating for better waterproofing)

My configuration:
motor: Emax Eco II 2807 1700Kv
propeller: DALPROP Cyclone T7056C Pro (3s) or Gemfan 7040-3 Flash (3-4s)
battery: 3-4s 1800-3000mAh
servo: Turnigy™ MG-14W BB Waterproof Analog Micro Servo