Containerised additive manufacturing at sea slashes naval spare-part
- lead times from months to under two days, with implications for any
- industry operating in remote or austere environments.
- The USS Somerset produced a reverse-osmosis generator bushing in 34
- hours during RIMPAC 2024 using a flight-deck manufacturing container,
- versus weeks or months via normal supply chains.
- Snowbird Technologies' SAMM Tech system combines three processes in
- one 20-ft shipping container: Meltio wire-laser metal deposition,
- Slice Engineering plastic AM, and FANUC CNC subtractive machining.
- The unit returns for RIMPAC 2026 with an expanded test programme,
- signalling the U.S. Navy's intent to validate distributed
- manufacturing for forward-deployed fleets.
- For manufacturers, the concept translates directly to mining sites,
- offshore platforms, and remote construction: produce critical spares
- on-demand rather than holding costly inventory or waiting for air
- freight.
- If the larger 2026 trial succeeds, expect procurement models to
- shift from stockpiling parts to certifying digital part libraries and
- deploying portable production cells.
The Problem: Spare Parts Take Months to Reach Ships at Sea
When a reverse osmosis generator bushing failed aboard the USS Somerset during RIMPAC 2024, the crew faced a familiar dilemma. Ordering a replacement through normal supply channels would have taken weeks, possibly months. Instead, they printed and machined a new one in 34 hours using a containerised manufacturing unit parked on the flight deck.
That unit, Snowbird Technologies' SAMM Tech system, is back for RIMPAC 2026 with a larger mandate and a more ambitious test programme. What SAMM Tech Actually Is
Snowbird's patented system packs three manufacturing processes into a single shipping container: metal additive manufacturing via Meltio wire-laser deposition, plastic additive manufacturing from Slice Engineering, and CNC subtractive machining using FANUC equipment. The idea is straightforward. A ship at sea, or a forward base with limited logistics access, carries everything needed to produce readiness parts without waiting for the supply chain to catch up.
The 2024 demonstration proved the concept worked in practice. The 2026 iteration, running from June 24 to July 31 in and around the Hawaiian Islands, will test whether it works at scale. The Experiment: 50 Nodes, 31 Nations, One Network
RIMPAC 2026 involves approximately 40 surface ships, five submarines, 140 aircraft, and over 25,000 personnel from 31 nations. Chile serves as deputy commander, Japan as vice commander. Into this environment, the Naval Postgraduate School's Consortium for Advanced Manufacturing Research and Education (CAMRE) is inserting a distributed manufacturing experiment.
CAMRE aims to link more than 50 advanced manufacturing nodes into an integrated network. The goal is production timelines measured in days rather than months. Snowbird's SAMM Tech is one node in that network, selected specifically for its maritime portability.
The deployment schedule runs in two phases. First, SAMM Tech will operate in transit from U.S. Navy Base San Diego to Pearl Harbor Naval Shipyard. Then it shifts to on-site manufacturing for the exercise duration. In 2024, the focus was purely at-sea production. This year, Snowbird will also support extended shipyard-based activities, testing whether the same containerised unit can transition smoothly between maritime and shore environments. Why This Matters for Manufacturing
The defence logistics problem is not unique to the Navy. Any manufacturer operating across distributed sites, remote facilities, or regions with unreliable supply chains faces similar constraints. The SAMM Tech approach, if validated at RIMPAC, offers a template: consolidate multiple manufacturing processes into a portable format, connect the nodes digitally, and produce parts where they are needed rather than where it is convenient to centralise production.
Karl Wojtkun, Snowbird's Vice President of Business Development, frames the 2026 exercise as a capability expansion exercise. "SAMM Tech's containerised, all-in-one design enables seamless transition from maritime to onshore operations," he said. "We're proud to support the 30th iteration of RIMPAC and look forward to validating our capabilities in new environments to better serve the warfighter at the tactical edge."
Ethan Brown, Program Manager at FLEETWERX, the Naval Postgraduate School's innovation hub, is more specific about what they are testing. "RIMPAC provides an important opportunity to evaluate how technologies like Snowbird's SAMM Tech platform can perform in real operational environments to support part replacement, equipment maintenance and sustainment closer to the point of need in maritime environments." The Numbers to Watch
The 2024 USS Somerset bushing repair took 34 hours from identification to installation. For 2026, the relevant metrics will be broader: how many different part types the system can produce, how material feedstock holds up in transit, whether the containerised environment maintains print quality across temperature and humidity variations at sea, and how quickly the unit can shift from shipboard to shore-based operation without recalibration.
RIMPAC runs through July 31. The manufacturing data Snowbird collects there will determine whether containerised additive manufacturing moves from demonstration to standard equipment.
M4S TAKE
My take: AI claims need scrutiny. The useful implementations reduce cycle time or defect rates in measurable ways. Vague promises about 'optimization' without specific metrics are usually marketing.
Simon McLoughlin
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