Ship:Osborne

VIII

9,040,000

Osborne — U.S.A. Tech Tree Tier VIII Destroyer.

A destroyer armed with dual-purpose 137 mm guns, which were developed in the U.S. between 1939 and 1940 as a replacement for the 127 mm Mark 12 guns. In terms of size and layout, she is similar to Fletcher-class ships.

Pros

• Access to 137mm SAP shells that penetrate 38mm armor
• High SAP damage per minute
• Smoke Screen consumable with pooled usage time available

Cons

• Only has one set of torpedo tubes
• Total usage time of Smoke Screen consumable is shorter than an ordinary destroyer

Ship Stats

Hull Information

SURVIVABILITY	Osborne (A)	Osborne (B)
• Hit Points	14100	17800
• Torpedo protection damage reduction (%)	0%

ARMOR DETAIL
• Belt (mm)	19
• Deck (mm)	19
• Superstructure (mm)	13
• Extremities (mm)	19

MANEUVERABILITY	Osborne (A)	Osborne (B)
• Maximum speed (kt)	35.0	35.0
• Turning circle radius (m)	630	630
• Rudder-shift time (sec)	5.8	4.1

CONCEALMENT	Osborne (A)	Osborne (B)
• Detectability by sea (km)	7.63	7.63
• Detectability by air (km)	3.47	3.47
• Detectability after firing main guns in smoke (km)	3.13
• Detectability by depths (km)	3.47	3.47

Main Battery

MAIN BATTERY	Mk8 mod. 1	Mk8 mod. 2
• Arrangement	4×1.0 137mm
• Firing range (km)	11.4	12.54
• Reload time (sec)	3.2
• Rate of fire (shots/min)	18.8
• 180° turn time (sec)	14.4

DISPERSION
• Dispersion type	Standard DD dispersion
• Dispersion formula	Dispersion (m) = 7.5 × range(km) + 15
• Sigma	2.0
• Maximum dispersion (m)	100
• Dispersion at 5 km	52
• Dispersion at 10 km	90
• Dispersion at 11.4 km	100

HE SHELL
• Name	137 mm HE Mk1
• Maximum damage	1950
• Fire chance (%)	8.0%
• Shell velocity (m/s)	823
• Shell weight (kg)	34
• Penetration (mm)	23

SAP SHELL
• Name	137mm CS Mk1
• Maximum damage	3000
• Shell velocity (m/s)	823
• Shell weight (kg)	34
• Penetration (mm)	38
• Fuse time (sec)	0.03
• Ricochet start (°)	65
• Always ricochet (°)	75
• Normalisation (°)	45
• Arming threshold (mm)	25

Torpedoes

TORPEDO LAUNCHERS
• Number of launchers	1
• Torpedo name	Mk16 mod. 3
• Reload time (sec)	75.0
• 180° turn time (sec)	7.2
• Damage	15533
• Range (km)	9.0
• Speed (kt)	60
• Detectability (km)	1.4
• Flooding chance (%)	259%

AA Defense

Osborne (A)

AA ARMAMENT	MOUNTS × BARRELS
40 mm	3 × 2
20 mm	9 × 2
137 mm	4 × 1

Continuous damage — average DPS within each action zone

RANGE	DPS	HIT CHANCE	ACTION ZONE (km)
Short-range	136.5	95%	2.0
Mid-range	70	100%	3.5
Long-range	63	100%	5.8

Osborne (B)

AA ARMAMENT	MOUNTS × BARRELS
40 mm	5 × 2
20 mm	7 × 2
137 mm	4 × 1

Continuous damage — average DPS within each action zone

RANGE	DPS	HIT CHANCE	ACTION ZONE (km)
Short-range	101.5	95%	2.0
Mid-range	115.5	100%	3.5
Long-range	63	100%	5.8

Damage by shell explosions

EXPLOSIONS / SALVO	DAMAGE	HIT CHANCE	ACTION ZONE (km)
3	1540	100%	3.5–5.8

Depth Charges

DEPTH CHARGES
• Max damage	5100
• Number of charges	2
• Bombs per charge	12
• Reload time (sec)	40.0

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4
Slot 5

Consumables

• Slot 1: Damage Control Party  (5.0s action, 40.0s cooldown)
• Slot 2: Smoke Generator  (160.0s total usage, 15.0s minimum action, 20.0s cooldown)
• Slot 3: Engine Boost  (3 charges, 120.0s action, 120.0s cooldown)

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