Key Takeaways
- The Southeast Regional Maintenance Center (SERMC) has fielded the next‑generation Insertable Stalk Inspection System (ISIS360) to improve shipboard tank inspections.
- ISIS360 enables rapid, remote visual assessment of tanks without requiring gas‑free certification or confined‑space entry, cutting inspection timelines from weeks to hours.
- Initial operational use aboard USS Iwo Jima (LHD 7) in April 2025 captured imagery from 31 tanks, informing future inspection periodicities and reducing unnecessary manned entries.
- The system enhances safety by keeping personnel out of hazardous environments and allows inspections even when tanks are full of fuel.
- High‑resolution 360° imagery quantifies corrosion, supporting predictive maintenance and better planning for Chief of Naval Operations (CNO) availabilities.
- Collaboration with the Mid‑Atlantic Regional Maintenance Center (MARMC) and Southwest Regional Maintenance Center (SWRMC) facilitated knowledge transfer and smooth local adoption.
- The compact, battery‑operated design of ISIS360 improves deployability in operational settings compared with earlier versions.
Overview of the Initiative
The Southeast Regional Maintenance Center (SERMC) recently announced the fielding of the Insertable Stalk Inspection System version 360 (ISIS360), a state‑of‑the‑art technology aimed at modernizing tank inspections across the U.S. Navy’s Surface Fleet. By integrating advanced imaging capabilities with a portable, battery‑powered platform, ISIS360 addresses longstanding challenges associated with traditional manual inspections, such as extensive preparation times, safety hazards, and logistical burdens. The initiative reflects the Navy’s broader push to leverage digital tools for improved fleet readiness and maintenance efficiency.
Technology Description and Capabilities
ISIS360 consists of a small, rugged camera mounted on a flexible stalk that can be inserted into a tank through existing openings. The system captures high‑resolution, 360‑degree imagery of the interior surfaces while operating on internal battery power, eliminating the need for external AC sources or elaborate setup. Unlike its predecessor, the original ISIS deployed roughly a decade ago, ISIS360 features a more user‑friendly interface, enhanced maneuverability around complex ship structures, and the ability to function safely even when tanks contain fuel or other hazardous substances. The captured imagery is processed to detect and map corrosion, allowing analysts to estimate the percentage of affected surface area.
Operational Demonstration aboard USS Iwo Jima
The first operational use of ISIS360 took place during April 2025 aboard the amphibious assault ship USS Iwo Jima (LHD 7). Maintenance teams deployed the system to inspect 31 distinct tanks, acquiring detailed visual data without performing gas‑free certifications or sending personnel into confined spaces. Shane Stevens, SERMC Code 200 Project Support Engineer, noted that the imagery produced actionable results for determining future inspection periodicities and alleviating concerns about upcoming manned inspections. The evolution demonstrated the system’s ability to deliver comprehensive condition assessments within a short time window.
Safety and Efficiency Improvements
Traditional tank inspections required sailors to empty, clean, and certify tanks as gas‑free before entering, a process that could span days or weeks and involved building scaffolding, installing temporary lighting, and conducting confined‑space entries—activities that posed significant safety risks. ISIS360 removes the need for human entry by keeping inspectors outside the tank while the camera captures internal conditions. This shift not only protects personnel from hazardous atmospheres and physical hazards but also reduces the preparatory workload, translating directly into increased maintenance efficiency and reduced ship downtime.
Impact on Maintenance Planning and Predictive Analytics
By providing quantitative data on corrosion extent and location, ISIS360 supports predictive maintenance strategies. Maintenance planners can now prioritize tanks that exhibit significant degradation for repair while postponing or eliminating inspections on tanks that remain in good condition. Captain Kiah Rahming, commanding officer of SERMC, emphasized that the advanced knowledge of tank condition enables better maintenance planning, limits unnecessary work, and prevents unexpected discoveries that could disrupt scheduled availabilities. The data also feed into long‑term corrosion trend analysis, informing future design and material choices.
Collaboration and Knowledge Transfer
Although SERMC led the local fielding effort, the project benefited from close collaboration with the Mid‑Atlantic Regional Maintenance Center (MARMC) and the Southwest Regional Maintenance Center (SWRMC), both of which possessed more extensive experience with ISIS360. MARMC provided a team to operate three cameras simultaneously, accelerating inspection timelines during the limited opportunity window. SERMC used this partnership to familiarize its personnel with the system’s operation, capture lessons learned, and ensure a smooth adoption process before broader implementation across the fleet.
Logistical and Operational Advantages
The compact, battery‑operated nature of ISIS360 enhances its deployability in varied operational environments, including forward‑deployed ships where access to external power may be limited. Compared with earlier ISIS iterations, the current version’s lightweight design and improved maneuverability allow technicians to navigate tight spaces and complex internal geometries with greater ease. This portability reduces the need for extensive support equipment, thereby simplifying logistics and enabling rapid response during maintenance periods or emergent situations.
Future Outlook and Fleet‑Wide Implications
The successful demonstration aboard USS Iwo Jima signals readiness for wider adoption of ISIS360 across the Surface Fleet. As more regional maintenance centers integrate the system, the Navy anticipates cumulative savings in man‑hours, reduced exposure to hazardous conditions, and heightened overall ship availability. Continued feedback from operators will likely drive further refinements, such as enhanced image analytics software or integration with automated maintenance management systems, ensuring that the technology evolves alongside fleet needs. In sum, ISIS360 represents a tangible step toward safer, faster, and more data‑driven shipboard maintenance, directly contributing to enhanced fleet readiness.