Instant Release Ensures Unparalleled Reliability

The ARC-1XD release mechanism is based on the vaporization of a nickel-chromium wire by means of a very high current electric current. The wire is strung between two sturdy posts, constraining a simple level arm. Upon vaporization, the lever arm is set free and opens typically by the buoyant force of the instrument package or a buoy that is released to the surface.

  • The mechanism is very fast acting. Overall, time from issuing the release command until trigger of the release is a few seconds. The wire vaporization itself lasts just a few thousands of a second. Fast action enables recovery of many instruments in a day at sea. This contrasts releases based on the electrolytic erosion of a link, a process that takes 5 to 30 minutes. 

  • Works in sea and fresh water alike and release process not inhibited by any wire fouling concern. Electrolytic erosion releases do not work effectively in fresh water or may be inhibited by link fouling. 

  • Very simple with only a single moving part. Upon wire vaporization, the lever arm is virtually guaranteed to open when used as instructed. This compares to motor and solenoid driven releases that have multiple moving parts and are susceptible to jamming due to marine fouling.

Non-Corrosive Hardware & Low Power Consumption

 ARC-1XD is manufactured entirely using non corrosive materials. The housing is a tough and ductile Delrin, a slippery, shatter proof and fouling resistant material well proven in underwater systems. The metal hardware is entirely titanium, eliminating any corrosion concerns. This eliminates other devices that may use crevice corrosion susceptible stainless steel, or anodized aluminum that is subject to pitting.

  • The ARC-1XD also requires minimal power, and a single D-size Lithium battery powers the processor and acoustic receiver for mission durations of up to two years. The sonar transmitter and release mechanism are powered by a set of 4 AA alkaline cells which are electrically disconnected from power until the interrogate and release sequence has been initiated. A battery pack lasts through about 50 release cycles. This allows the ARC-1 to be re-deployed without many times and supporting quick turn-around of the equipment when servicing a large number of deployed units or sets of fishing gear on a regular basis.

  • The endurance of the ARC-1 is proven through lengthy and repeat deployments of numerous hundreds of the devices owned by our customers. At this time, the cumulative field history of the ARC-1 is likely in excess of 1000 years.

Fast and Efficient 

At sea, the ARC-1XD is serviced quickly and easily.

  • The batteries last for a cumulative deployment of up to two years and 50 release cycles. When servicing a large set of gear repeatedly over a season, a recovered release can be re-deployed without changing batteries. Instead, in many cases it is sufficient to service batteries in between seasons. 

  • Re-arming of the release is as simple as a quick hose down (if necessary), and the securing of a new 25mm (1″) length on nickel-chromium between the posts. The only tool needed are some snips and a small Allen wrench. The cost of wire replacement is pennies.

Alternative Entanglement Prevention Methods

Gear Modification


 Weak Linked Rope


Negatively Buoyant 

  •  Increases Chance of Entanglements

Acoustic Detterence


Whale Pingers


80-180 dB

  •  Ineffective

 Fishing Ban


Restricted Fishing Zones

Real Time Whale Spotting

  •  Not practical