6 METER
S3-HP: SEA-STALKER (S3-HP)
High-Performance USV
Hunter-Killer for Asymmetric Dominance
Cyber Hardened
Overview
The S3-High Performance (S3-HP) is an Unmanned (Remote or Autonomous) Small Unmanned Surface Vehicle (sUSV) with high endurance, robust aluminum hull, heavy-duty Indmar gasoline engine with water-jet-based propulsion, and a Seakeeper 1 gyro-stabilizer.
The S3-HP is built on the proven S3 design, inheriting its modular open system architecture, plug-and-play command and control (C2), and advanced ISR capabilities, and is enhanced for missions that require agility maneuverability and high speed for ingress and egress.
The S3-HP complies with NATO Standardization Agreements (STANAG) 4586 and the Joint Architecture for Unmanned Systems (JAUS) protocols and is available as a kit or fully assembled.
Key Features
![](https://beta.swiftships.com/wp-content/uploads/2024/12/hunter-killer-S3.png)
![](https://beta.swiftships.com/wp-content/uploads/2024/12/extreme-performance-S3.png)
![](https://beta.swiftships.com/wp-content/uploads/2024/12/SS-icons-S3.png)
![](https://beta.swiftships.com/wp-content/uploads/2024/12/multi-mission-system-S3.png)
Game Changer – Hunter-Killer USV
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-Hp_SM_Torpedo_001.png)
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP_4xMk32_Mod_launcher_009-e1736391955575.jpg)
NAVIGATING SYSTEM
COLREG Compliant Autonomous Navigation integrated with FLIR, LPI Radar and AIS sensors.
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP-SF-e1736391847216.png)
SEAFRAME
The Hull structure has been designed and validated with Stavitsky’s method to validate performance and durability.
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP_4xMk32_Mod_launcher_011-e1736391906169.jpg)
PROPULSION SYSTESM
S3-HP reaches 45 Knots with a range of 1000NM. It features reliable Propulsion system with powerful Indmar 310 HP engine and waterjet.
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP_4xMk32_Mod_launcher_007-e1736398005970.jpg)
POWER GENERATION
DC system to provide starting power to the main engine, electronics, sensors and weapon systems. Charging via engine driven alternators or separate generator for EW payloads.
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP_4xMk32_Mod_launcher_006-e1736398232897.jpg)
DIAGNOSTICS AND RESPONSE
Remote monitoring of Machinery diagnostic data and vessel parameters
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP_4xMk32_Mod_launcher_012-1-e1736472332342.jpg)
AUTONOMY SOLUTION
Capable of Navigational and Full Mission Autonomy with Man in the Loop. Level of automation up to Level 5.
![](https://beta.swiftships.com/wp-content/uploads/2025/01/S3-HP_4xMk32_Mod_launcher_008-e1736398289298.jpg)
COUNTER USV
S3-HP is designed to overtake and intercept adversary’s USVs in order to protect own fleet or escort High Value Units (HVUs) in high risk littoral environments
Technical Specification
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LENGTH
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20 ft (6.1 Meter) |
BEAM
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6 ft (1.82 Meter) |
DRAFT
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1-2 ft. (up to .61 Meter) |
RANGE
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800-1000 NM |
FUEL CAPACITY
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200 Gallons (757.08 Liters) |
SPEED
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45+ Knots |
WEIGHT (Total)
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3,000 lbs. (1360.8 kg.) |
ENDURANCE
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5 days @ 4-5 knots |
MACHINERY
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SENSOR / ELECTRONICS
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ARMAMENT
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OPTIONS
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Our S3-HP can be outfitted with a modular payload. The onboard sensor and communication systems allow for autonomy and situational awareness (optional/GFE) |
OTHER
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Gallery
Related Programs
![](https://beta.swiftships.com/wp-content/uploads/2022/07/slide-09_A-Fliped_CR.jpg)
Militarized Unmanned and Minimally Manned Vessels
Swiftships design and constructs of fully autonomous military vessels, and offers commercial platform conversion to militarized unmanned/minimally manned vessels. We have developed many variants of our Fast Supply Vessels (FSVs), not only for full autonomy, but also for minimally manned or remote operations of the craft.
Our primary example is an offshore patrol vessel previously called Riley Claire (aka Nomad) that is one of two offshore vessels so far converted to autonomous operation. Nomad is being tested by the US Navy in multiple missions. It traveled from the Gulf Coast through the canal to the U.S. West Coast, a total of 4,421 nautical miles, with 98% of that distance in autonomous mode and the Panama Canal in manual mode.
Learn more about Swiftships’ “Autonomous Solutions“, or read “Riley Claire (aka Nomad)” case study.
How can we work together?
Of course, we can build your vessels in our location! But if for some economic or strategic reasons, you choose vessels’ construction at your location – Swiftships can provide you a full support. We have extensive experience working with international clients on co-production programs, and we offer customized solutions to meet your needs. Learn more…
Other Platforms
We design, build, integrate, and maintain naval vessels for multiple missions: from border protection to lower-intensity threat missions and high-demand or high-threat law enforcement scenarios.