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X-classsubmarine

Midget / Coastal Submarines · United Kingdom · 1916
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X-classsubmarine

X-class submarine
X-class submarine Photo: D · Wikimedia Commons · CC BY-SA 2.0
* Absolute score — assessed within category · no era adjustment
Stealth
30
Compactness
80
Special-Ops Capability
40
Littoral Suitability
50
Sensors
20
Endurance
15
Firepower
20
Survivability
25
Technology
20
Cost-Effectiveness
40
Origin United Kingdom
CategoryMidget / Coastal Submarines
EraWorld War I
In service1916–1945
Operators52 countries
Quantity13
Data Quality88%
37
Midget / Coastal Submarines MASS Rating
1/2
World War I
41/50
All-Time
Midget / Coastal Submarines · 10 axes scored
Stealth
30
Compactness
80
Special-Ops Capability
40
Littoral Suitability
50
Sensors
20
Endurance
15
Firepower
20
Survivability
25
Technology
20
Cost-Effectiveness
40
ⓘ Regardless of era, the same scoring system applies to all units in the midget / coastal submarines category.
01 / Overview
X-class submarine
Production
1916–1945
Quantity
13
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MIDGET / COASTAL SUBMARINES · WORLD WAR I
1
PERFORMANCE/PRICE
78
UNIT COST (2025 USD)
—
37
midget / coastal submarines category
ⓘ Performance/Price and MASS score are computed across all units in the midget / coastal submarines category, regardless of era.
02 / Specs & Design
◎Identification4MOD.4
  • Laid Down1942
  • Commissioned1943
  • Boats in Class13
  • In ServiceNo
◈Displacement & Dimensions5MOD.5
  • Surfaced Displacement27 t
  • Submerged Displacement35 t
  • Length15.8 m
  • Beam1.9 m
  • Draft1.2 m
▣Propulsion5MOD.5
◇Diving & Endurance5MOD.5
  • Test Depth100 m
  • Maximum Operating Depth200 m
  • Submerged Endurance2 day
  • Patrol Duration6 day
  • Complement (crew)5
◆Armament6MOD.6
03 / History
SERVICE LIFESPANRetired
  1. 1916Production started
  2. 1945Production ended
110
years in service
29
years in production
13
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 52 countries retired it.
04 / Operators
📖 TERMS ON THIS PAGE2terms
Anti-ship missiles are guided missiles designed to engage and destroy naval vessels. They are typically used by aircraft, ships, or submarines to attack enemy ships.
Propulsion system combining diesel engines to generate electricity, which powers electric motors driving the vessel's propellers.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Midget / Coastal Submarines entry →