Stridsbåt 90N - Norwegian assault craft

Til_Dovre_Faller · March 17, 2024, 8:28pm

STRIDSBÅT 90N

TYPE: assault craft/stridsbåt
BUILDING SITE: N. Sundin Dockstavarvet AB, Sweden
AMOUNT IN NORWEGIAN SERVICE: 20x were bought

EARLY SERVICE

Spoiler

ARMAMENT

1x 12.7x99 mm M2 Browning machinegun
-Placement: Directly behind the wheelhouse in a tower
2x 12.7x99 mm M2 Browning machineguns
-Placement: behind the wheelhouse and the tower, one on each side of the vessel mounted on the hegde
2x 12.7x99mm M2 Browning machineguns
-Placement: Both together uncer the hatch in the bow
1x 5.56x45mm FN MINIMI Machinegun
-Placement: Aft of the vessel on its own footing with a light on the left side
1x 40x52mm mark 19 grenade launcher
-Mass: 35.2 kg (empty, without accessories)
-Length: 1,090 mm
-Barrel length: 413 mm
-Width: 240.4 mm
-Height: 199 mm
-Cartridge: 40x53 mm
-Action: API Blowback
-Rate of fire:
325-375rpm (cyclic)
40 rpm (sustained)
60 rpm (rapid)
-Muzzle velocity: 230–240 m/s (average)
-Effective firing range: 1,500m
-Maximum firing range: 2,212 m
-Feed system: 32- or 48-grenade belt
-Sights: Iron

TECHNICAL DATA
Displacement: 19 Metric Tons
Lenght: 14.9 Meter
Width: 3.8 Meter
Depth: 0.8 Meter
Crashstop: 1.5 boat length

MACHINERY
2x Scania DSI 14L V8 Waterjet turbo, intercooler
Power each eigne separate: 1.256 BHP/625 HP
Power both eignes combined: 2512 BHP/1250 hp
Speed: 40 Knots (74.08 km/h)

CREW
Estimated crew: 4 Men

EARLY SERVICE - TESTED WITH HELLFIRE MISSILES 2003

Spoiler

ARMAMENT

1x 12.7x99 mm M2 Browning machinegun
-Placement: Directly behind the wheelhouse in a tower
2x 12.7x99 mm M2 Browning machineguns
-Placement: behind the wheelhouse and the tower, one on each side of the vessel mounted on the hegde
2x 12.7x99mm M2 Browning machineguns
-Placement: Both together uncer the hatch in the bow
1x 5.56x45mm FN MINIMI Machinegun
-Placement: Aft of the vessel on its own footing with a light on the left side
1x 40x52mm mark 19 grenade launcher
-Mass: 35.2 kg (empty, without accessories)
-Length: 1,090 mm
-Barrel length: 413 mm
-Width: 240.4 mm
-Height: 199 mm
-Cartridge: 40x53 mm
-Action: API Blowback
-Rate of fire:
325-375rpm (cyclic)
40 rpm (sustained)
60 rpm (rapid)
-Muzzle velocity: 230–240 m/s (average)
-Effective firing range: 1,500m
-Maximum firing range: 2,212 m
-Feed system: 32- or 48-grenade belt
-Sights: Iron
1x8 AGM-114 Hellfire
the installation for firing hellfire missiles was mounted on its own stand and had gyro stabilization. This was to attack surface targets. Electro-optical sensor located behind the bridge and rail for hellfire on the aft deck
PLacement: on an stand aft/mid. pod with 8 missiles
Mass: 45–49 kg
Length: 1.6 m
Diameter: 180 mm
Wingspan: 0.33 m
Engine_ Thiokol TX-657 Solid-fuel rocket
Propellant: APC/HTPB
Operational range: 0.5 to 11 km
Maximum speed Mach 1.3
Guidance system: Semi-active laser homing
Millimeter-wave radar seeker
Launch platforms: Rotary- and fixed-wing aircraft, unmanned combat aerial vehicles, tripods, ships, ground vehicles

TECHNICAL DATA
Displacement: 19 Metric Tons
Lenght: 14.9 Meter
Width: 3.8 Meter
Depth: 0.8 Meter
Crashstop: 1.5 boat length

MACHINERY
2x Scania DSI 14L V8 Waterjet turbo, intercooler
Power each eigne separate: 1.256 BHP/625 HP
Power both eignes combined: 2512 BHP/1250 hp
Speed: 40 Knots (74.08 km/h)

CREW
Estimated crew: 4 Men

LATE SERVICE

Spoiler

ARMAMENT

1x 12.7x99mm Kongsberg Sea Protector
-Placement: On top of the wheelhouse
-Machinegun: Browning M2HB 12,7mm
-Ammunition mixture 50/50: NM140MP + NM160MP-T
-Armor penetration RHAe NM160MP-T: 22 Millimeter at 100 Meter
-Armor penetration RHAe NM140MP: 10.6 Millimeter at 100 Meter
-Weight: 135 kg
-Height: 749 mm
-Operating temperature: -40 to +65 °C
-Storage temperature: -51 to +71 °C
Dynamic performance:
-Maximum Azimuth Slew Rate: >100°/s
-Maximum Elevation Slew Rate: >50°/s
-Range of Traverse: Azimuth Continuous 360°
-Range of Elevation: -20° to +60°
Sensor package:
-Color Day Camera (VIM)
-Infra Red Camera (TIM)
-Laser Range Finder (LRF)
-Clean Sensor System (CSS)
2x 12.7x99 mm M2 Browning machineguns
-Placement: behind the wheelhouse and the tower, one on each side of the vessel mounted on the hegde
2x 12.7x99mm M2 Browning machineguns
-Placement: Both together uncer the hatch in the bow
1x 5.56x45mm FN MINIMI Machinegun
-Placement: Aft of the vessel on its own footing with a light on the left side
1x 40x52mm mark 19 grenade launcher
-Mass: 35.2 kg (empty, without accessories)
-Length: 1,090 mm
-Barrel length: 413 mm
-Width: 240.4 mm
-Height: 199 mm
-Cartridge: 40x53 mm
-Action: API Blowback
-Rate of fire:
325-375rpm (cyclic)
40 rpm (sustained)
60 rpm (rapid)
-Muzzle velocity: 230–240 m/s (average)
-Effective firing range: 1,500m
-Maximum firing range: 2,212 m
-Feed system: 32- or 48-grenade belt
-Sights: Iron

TECHNICAL DATA
Displacement: 19 Metric Tons
Lenght: 14.9 Meter
Width: 3.8 Meter
Depth: 0.8 Meter
Crashstop: 1.5 boat length

MACHINERY LATE
2x Scania DSI 16L V8 Waterjet
turbo, intercooler
Power each eigne separate: 662 kW/900 hp
Power both eignes combined: 1324kW/1800 hp
Speed: 48 Knots (88.89 km/h)

CREW
Estimated crew: 4 Men

NORWEGIAN MODIFICATIONS (400+ changes!)
-Additional bilge pumps fitted
-Fire pumps that can help submerge parts of the warship, including the engine room, in the event of a fire
-The SB90N is also equipped with more watertight compartments than the Swedish warships, so it takes a lot before an SB90N sinks.
-The anchor is mounted at the back of the Norwegian warships, so that the boat can pull itself off a shallow or sandbar should it run aground
-The ceiling height in the main room has also been raised to 2 metres
-In addition, an additional 7 kW generator has been installed to produce electricity for a larger battery set than the Swedish warships have
-The B90N also has a greater range than the Swedish ones, due to greater fuel capacity
(The Swedes have since adopted many of the changes in the standard Stridsbåt 90)

HISTORY
Stridsbåt 90N is a Swedish-built fast-moving boat that was purchased by the Norwegian Navy in the early 1990s. The acquisition of these boats was justified by the need for a ready-made concept for the Coast Guard Department that could be put straight into service. But eventually it became clear that these boats needed extensive adaptations to Norwegian conditions before they could be put into operation. A total of 400 changes separate the Norwegian Stridsbåt 90N from the original Swedish Stridsbåt 90!

This vessel was built at N. Sundin Dockstavarvet AB in Sweden and is therefore an adapted version from the version used by the Swedish coastal artillery. The letter N (Stridsbåt 90N) stands for Norwegian.

The main function of this boat in Norwegian service is to be able to quickly transport coastal hunters from place to place, as well as to transport teams and land them.

These boats were updated and modernized around 2014, with, among other things, new and larger engines, which increased the power considerably and the speed by approximately 8 knots. They also made it so that the engines provided enough electricity to power the new remote-controlled weapon station on the wheelhouse, a Kongsberg Sea protector with a 12.7mm M2 Browning and several different senors, including Nvd. 16 of the 20 boats received these changes

The Coastal Hunter Command equipped the Norwegian Stridsbåt 90N with a laser-guided naval target version of the Hellfire missile for a kosr period of time for testing! this missile had a range of approximately 8,000 meters, however, this only for testing Stridsbåt 90N as a weapon platform

IN GAME
I think this would be a very fun and efficient boat in a coastal tree, it is very fast, has good equipment that is powerful enough to knock out smaller boats, .50 cal is not much but it does the job, so we have available a grenade launcher that can be useful in certain situations. This boat has incredibly good mobility, and that helps a lot

5.56MM AMMUNITION

Spoiler

NM 256 Tracer
-NM256: Norwegian Model 256
Full metal jacket tracer round

NM 255 full metal jacket
-NM255: Norwegian Model 255
Full metal jacket round

12.7MM AMMUNITION

Spoiler

NM140 12.7x99 MP
-MP: Multi Purpose
-NM140: Norwegian Model 140
-Projectile weight Approx: 43 g
-Muzzle velocity Approx: 903 m/s
-Dispersion requirement: SD ≤ 150 mm (Grade A)/SD ≤ 200 mm (Grade B)
-Penetration requirement: 22 mm RHA @ 0° @ 200m
-Service temperature: -54°C to +71°C
-Safety temperature: -54°C to +71°C

NM160 12.7x99 MP-T
-MP-T: Multi Purpose Tracer
-NM160: Norwegian Model 160
-Projectile weight Approx: 44 g
-Muzzle velocity Approx: 903 m/s
-Dispersion requirement: SD ≤ 200 mm (Grade A)/SD ≤ 300 mm(Grade B)
-Penetration requirement: 22 mm RHA @ 0° @ 200 m
-Tracer Visible: 50-200, ≥ 1 500 m
-Service temperature: -54°C to +71°C
-Safety temperature: -54°C to +71°C

40x53MM GRENADE AMMUNITION

Spoiler

HE & HE-SD
-High explosive and Self destroying
-Projectile weight: 240 g
-Muzzle velocity: 240 m/s
-Maximum dispersion Typical H&V deviation: < 1 mils
-Self-destruction: N/A/Yes
-Service temperature: -46°C to +63°C
-Safety temperature: -54°C to +71°C

HEDP AND HEDP-SD
-High explosive dual purpose & High explosive dual purpose self destroying
-Projectile weight: 245 g
-Muzzle velocity: 240 m/s
-Maximum dispersion Typical H&V deviation: < 1 mils
-Penetration: 50 mm (269–352 HB) at 65 m
-Tracer/self-destruction: N/A / 14 p
-Service temperature: -46°C to +63°C
-Safety temperature: -54°C to +71°C

NM 264
-NM1264: Norwegian Model 264
-Projectile weight: 247 g
-Muzzle velocity: 240 m/s
-Maximum dispersion: 1.0 mils
-Number of fragments: 1,200
-Penetration: > 65 mm RHA
-Airburst accuracy: 1 ms resolution
-Service temperature: -32˚C to +63˚C
-Safety temperature: -46˚C to +71˚C