Anti-magnetic system for Minesweeper
This was an interesting project for the Bowmaster team, and the first time they had worked with the Finnish Navy. The client specified Ray Anchors for three vessels because of the specific shape of the bow and the mechanics of the deployment systems. The anchors were to be used on three Navy Minesweeper boats, so the product had to be made from an antimagnetic material. Bowmaster enlisted the help of sister company Manson Anchors who had experience in fabricating anchors from antimagnetic materials. The biggest challenge of this project was the material selection and measuring the levels of magnetic permanility in μ. In addition, the Bowmaster team had to use a special welding consumable during the build.
The material selection in this project was hugely important. The stainless-steel plates had to have a low permeability reading. This particular type of steel is not magnetic, nor can it be magnetised. The Bowmaster Technical Sales Director worked closely with the supplier to personally ensure the magnetic permeability of each plate was less than 2μ, he did this by using an in-house testing facility. The plates that had been tested and approved were then used to cut parts and a special weld consumable was used to complete the build of the anchors. The final product was meticulously measured to ensure it was all less than 2μ and complied with client specifications. All three vessels are now fitted with this anchoring solution. This project was a fantastic opportunity for the Bowmaster team to upskill. They have designed and fabricated many more antimagnetic projects since.