Data Quality88%
MASS(Military Archive Scoring System)
ⓘ Regardless of era, the same scoring system applies to all units in the patrol boats & fast attack craft category.
01 / Overview
P 4-class torpedo boat
Category
Country
Production
1944–1955
Quantity
336
Operators
Conflicts
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
PATROL BOATS & FAST ATTACK CRAFT · WORLD WAR II
12
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
ⓘ Performance/Price and MASS score are computed across all units in the patrol boats & fast attack craft category, regardless of era.
02 / Specs & Design
◎Identification4MOD.4
- Hull ClassificationProject 123-bis / Project 123-K
- Ship TypeMotor torpedo boat
- Commissioned1944
- Ships in Class336
◈Displacement1MOD.1
- Light Displacement22 t
▣Dimensions3MOD.3
- Length (overall)19.26 m
- Beam3.4 m
- Draft1 m
◇Complement1MOD.1
- Total Complement12
◆Propulsion6MOD.6
- Propulsion Typediesel
- Number of Engines2
- Shaft Power1,790 kW
- Shafts / Screws2
- Top Speed46 kn
- Range500
▤Gun Armament3MOD.3
- Main Gun2 x 12.7 mm DShK or 1 x 2 14.5 mm KPV
- Main Gun Calibre14.5 mm
- Main Gun Count2
⬢Underwater Warfare2MOD.2
- Torpedo Tubes2
- ASW CapabilityYes
▲Sensors & Combat Systems1MOD.1
- Surface / Fire-Control RadarZarnitsa (Skin Head)
◎Survivability1MOD.1
- Hull Materialaluminum
◈Fleet Status1MOD.1
- Completed336
03 / History
SERVICE LIFESPANRetired
- 1939First deployment: World War II
- 1944Production started
- 1951Sale: People's Republic of China (46 units)
- 1955Production ended
- 1961Sale: Vietnam (12 units)
82
years in service
11
years in production
336
units produced
0
countries operating
ⓘ 18 countries retired it.
04 / Conflicts
P 4-CLASS TORPEDO BOAT · CONFLICTS SERVED IN100% win
Total Conflicts
1
Victories
1
Ongoing
0
Losses
0
ⓘ Shown only from conflicts recorded in our database.
05 / Variants
▚ WEAPON FAMILY
06 / Operators
Operator Countries18country
P 4-class torpedo boatSALES3records
| Year | Buyer | Quantity | Amount | Present Value (2025) |
|---|---|---|---|---|
| 1961 |  Vietnam | 12 | — | — |
| 1951 |  People's Republic of China | 46 | — | — |
| — |  Bangladesh | 4 | — | — |
ⓘ "Present Value" is an estimated amount adjusted for inflation.
07 / MASS Score
PATROL BOATS & FAST ATTACK CRAFT RANKING Patrol Boats & Fast Attack Craft · World War II
MASS RANKINGSMASS ↗
145PATROL BOATS & FAST ATTACK CRAFT12WORLD WAR II · PATROL BOATS & FAST ATTACK CRAFT1220RUSSIA · ALL WEAPONS17PERFORMANCE/PRICE · PATROL BOATS & FAST ATTACK CRAFT
ⓘ Rankings are within thePatrol Boats & Fast Attack Craftcategory.
📖 TERMS ON THIS PAGE1terms
Anti-Submarine Warfare. Capability to detect, track, and engage submarines.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources