Data Quality84%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the midget / coastal submarines category.
01 / Overview
Ha-7-class submarine
Category
Country
Prime contractor
Production
1916–1917
Quantity
2
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MIDGET / COASTAL SUBMARINES · WORLD WAR I
2
PERFORMANCE/PRICE
35
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the midget / coastal submarines category, regardless of era.
02 / Specs & Design
◎Identification7MOD.7
- Hull Classification3rd class submarine
- Submarine TypeCoastal Submarine
- Builder / ShipyardKure Naval Arsenal
- Laid Down1916
- Commissioned1916
- Boats in Class2
- In ServiceNo
◈Displacement & Dimensions5MOD.5
- Surfaced Displacement286 t
- Submerged Displacement321 t
- Length43.3 m
- Beam4.14 m
- Draft3.43 m
▣Propulsion5MOD.5
- Nuclear-PoweredNo
- Air-Independent Propulsion (AIP)No
- Shaft Power447 kW
- Top Speed (surfaced)12 kn
- Top Speed (submerged)7 kn
◇Diving & Endurance2MOD.2
- Test Depth30.5 m
- Complement (crew)26
◆Armament6MOD.6
- Torpedo Tubes4
- Torpedo Tube Diameter457 mm
- Cruise MissilesNo
- Ballistic Missiles (SLBM)No
- Anti-Ship MissilesNo
- Mine-Laying CapableNo
▤Sensors3MOD.3
⬢Stealth3MOD.3
▲Production2MOD.2
- First of Class1916
- Operators1
◎Fleet Status8MOD.8
- Completed2
- Active0
- Under Construction0
- Planned2
- Cancelled0
- Lost0
- Retired2
- Preserved0
03 / History
SERVICE LIFESPANRetired
- 1916Production started
- 1917Production ended
110
years in service
1
years in production
2
units produced
0
countries operating
ⓘ 1 countries retired it.
05 / MASS Score
MIDGET / COASTAL SUBMARINES RANKING Midget / Coastal Submarines · World War I
MASS RANKINGSMASS ↗
48MIDGET / COASTAL SUBMARINES2WORLD WAR I · MIDGET / COASTAL SUBMARINES432JAPAN · ALL WEAPONS40PERFORMANCE/PRICE · MIDGET / COASTAL SUBMARINES
ⓘ Rankings are within theMidget / Coastal Submarinescategory.
📚 Sources