Data Quality85%
01 / Overview
K-class submarine
Category
Country
Production
1917–1918
Quantity
17
Unit Price (current)
$10.8M↗ 3088% inflation · 1915→2025
Original Price
$340.0K (1915)
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
CONVENTIONAL SUBMARINES · WORLD WAR I
—
PERFORMANCE/PRICE
—
UNIT COST (2025 USD)
$10.8M
Original: $340.0K (1915)
Inflation: +%3088
ⓘ Performance/Price and MASS score are computed across all units in the conventional submarines category, regardless of era.
02 / Specs & Design
◎Identification7MOD.7
- Hull Classificationdouble hull
- Submarine Typefleet submarine
- Builder / ShipyardHM Dockyard Portsmouth, HM Dockyard Devonport, Vickers Limited, Armstrong Whitworth, Fairfield Shipbuilding and Engineering Company, Scotts Shipbuilding and Engineering Company, William Beardmore and Company
- Laid Down1913
- Commissioned1917
- Boats in Class17
- In ServiceYes
◈Displacement5MOD.5
- Surfaced Displacement1,980 t
- Submerged Displacement2,566 t
- Length103.33 m
- Beam8.08 m
- Draft6.38 m
▣Propulsion7MOD.7
- PropulsionSteam Turbine
- Nuclear-PoweredNo
- Air-Independent Propulsion (AIP)No
- Shaft Power7,755 kW
- Propulsor Typetwin screw
- Top Speed (surfaced)24 kn
- Top Speed (submerged)8 kn
◇Diving & Endurance1MOD.1
- Complement (crew)59
◆Armament6MOD.6
- Torpedo Tubes8
- Torpedo Tube Diameter457 mm
- Cruise MissilesNo
- Ballistic Missiles (SLBM)No
- Anti-Ship MissilesYes
- Mine-Laying CapableNo
▤Sensors & Combat Systems1MOD.1
- Combat SystemBL 4 inch naval gun Mk XI, 3 inch gun
⬢Stealth3MOD.3
▲Production & Cost3MOD.3
- Unit Cost340,000 USD
- First of Class1916
- Operators1
◎Fleet Status8MOD.8
- Completed17
- Active0
- Under Construction0
- Planned27
- Cancelled10
- Lost6
- Retired17
- Preserved1
03 / History
SERVICE LIFESPANRetired
- 1914First deployment: World War I
- 1917Production started
- 1918Production ended
109
years in service
1
years in production
17
units produced
0
countries operating
ⓘ The producing country no longer actively operates it. 1 countries retired it.
05 / MASS Score
Not enough weapon data to rank this category.
MASS RANKINGSMASS ↗
ⓘ Rankings are within theConventional Submarinescategory.
📖 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.
A mechanical device that converts steam pressure into rotational energy, used to drive shipboard generators or propulsion systems.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources