Role & capabilities
- Underwater survey
- Environmental assessment
- Primary domain
- Underwater
- System type
- Autonomous underwater vehicle
- Developer / manufacturer
- L3Harris
- Origin / production countries
- United States
- Other names
- Iver4 900 AUV
- Variants / configurations
- Not distinguished in reviewed sources
- Operators / programme customers
- United States — DIU submarine-capability procurement
Evidence & current status
Published product data does not establish acceptance of every offered configuration.
The Iver4 900 is the larger of two Iver4 configurations covered here. Its modular body accommodates navigation, energy and survey equipment, allowing the delivered vehicle to differ substantially from a bare platform description. It is an untethered autonomous vehicle; acoustic communication or a surfaced radio connection does not make it a continuously piloted ROV.
L3Harris distinguishes rechargeable nickel-metal-hydride and lithium-ion energy configurations. Published endurance and distance figures therefore need to retain their battery qualification. The standard product depth rating also should not be read as the operating limit of every installed payload. Survey sonar and environmental instruments are configuration choices, rather than evidence that every customer has the same sensor suite.
In March 2026, L3Harris announced a Defense Innovation Unit contract for a submarine torpedo-tube launch and recovery capability using Iver4 900 vehicles. This is specific procurement evidence for that programme, but it does not establish fleet-wide acceptance or the performance of a completed operational installation. The smaller Iver4 580 is recorded separately because its diameter, mass and energy capacity differ.
Sourced specifications
Figures apply to the named configuration. Maximum values are not guaranteed operating performance.
| Specification | Reported value | Context & source |
|---|---|---|
| Configuration | Modular, untethered AUV | Published model baseline; payload, battery and conditions affect performance. Source ↗ |
| Hull / propulsion | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Dimensions | Approximately 2.5 m long; 9 in diameter | Published model baseline; payload, battery and conditions affect performance. Source ↗ |
| Displacement / mass | Under 230 lb | November 2022 stated baseline; modules and payload affect delivered mass. Source ↗ |
| Payload | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Endurance | 20+ hours with 2 kWh NiMH; 40+ hours with 4 kWh lithium-ion | Manufacturer specification for the identified battery options, not a demonstrated guarantee for all payloads. Source ↗ |
| Range | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Speed | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Operating depth | 300 m | Published model baseline; payload, battery and conditions affect performance. Source ↗ |
| Sensors | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Communications / control | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
| Launch / deployment | Not established in the reviewed public sources. | Public evidence gap. No estimate or neighbouring variant value has been substituted. Source ↗ |
Documented milestones
Submarine capability contract announced
L3Harris announced DIU selection of its Iver4 900-based launch-and-recovery capability.
Read the announcement ↗
Publication history
- — Added in the September 2026 global coverage review, with sources, configuration limits and explicit data gaps.
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Follow the evidence
Source types identify who makes the claim. Programme milestones and supplier statements should be read in context.