Data Quality86%
01 / Overview
Explorer-class submarine
Category
Country
Production
1955–1958
Quantity
2
Unit Price (current)
$60.2M↗ 1014% inflation · 1958→2025
Original Price
$5.4M (1958)
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
CONVENTIONAL SUBMARINES · EARLY COLD WAR
—
PERFORMANCE/PRICE
—
UNIT COST (2025 USD)
$60.2M
Original: $5.4M (1958)
Inflation: +%1014
ⓘ Performance/Price and MASS score are computed across all units in the conventional submarines category, regardless of era.
02 / Specs & Design
◎Identification7MOD.7
- Hull Classificationexperimental
- Submarine Typeexperimental
- Builder / ShipyardVickers-Armstrongs, Barrow-in-Furness
- Laid Down1954
- Commissioned1958
- Boats in Class2
- In ServiceYes
◈Displacement5MOD.5
- Surfaced Displacement780 t
- Submerged Displacement1,000 t
- Length54.25 m
- Beam4.78 m
- Draft3.35 m
▣Propulsion5MOD.5
- PropulsionSteam Turbine
- Nuclear-PoweredNo
- Air-Independent Propulsion (AIP)No
- Propulsor Typesteam turbine
- Top Speed (submerged)30 kn
◇Diving & Endurance1MOD.1
- Complement (crew)49
◆Armament7MOD.7
- Torpedo Tubes0
- VLS Cells0
- Cruise MissilesNo
- Ballistic Missiles (SLBM)No
- SLBM Count0
- Anti-Ship MissilesNo
- Mine-Laying CapableNo
▤Sensors & Combat Systems5MOD.5
- Flank Array SonarNo
- Towed Array SonarNo
- Surface-Search Radarfalse
- ESM / ELINT SuiteNo
- Combat Systemnone
⬢Stealth3MOD.3
▲Production & Cost3MOD.3
- Unit Cost5,555,556 USD
- First of Class1956
- Operators1
◎Fleet Status8MOD.8
- Completed2
- Active0
- Under Construction0
- Planned2
- Cancelled0
- Lost0
- Retired2
- Preserved0
03 / History
SERVICE LIFESPANStill in Service
- 1955Production started
- 1958Production ended
71
years in service
3
years in production
2
units produced
1
countries operating
ⓘ The producing country still actively operates it. 2 countries retired it.
05 / MASS Score
Not enough weapon data to rank this category.
MASS RANKINGSMASS ↗
ⓘ Rankings are within theConventional Submarinescategory.
📖 TERMS ON THIS PAGE1terms
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