The LS-30B mount was designed by Laurence Scott Ltd and entered service with the RN in 1989 carrying the Oerlikon KCB 30mm cannon, the system was designated in service as the DS-30B (Laurence Scott having been taken over by MSI Defence Systems Ltd). To replace the rather motley collection of Bofors 40mm, Oerlikon 20mm and the GCM-AO3 with their differing ammunition, training and logistic requirements, the RN opted for modern single 30mm cannon. In service since 1983, this simple, manually-aimed weapon has a rate of fire of up to 1,000 rounds per minute and remains in use, fitted to the LPDs, the survey vessels and Batch 1 OPVs. The successor to the Mk7, the Oerlikon 20mm/85 KAA cannon GAM-BO1 mounting. These were fitted across the fleet in the mid-late 1980s to replace the 40mm Bofors and provide better close in air-defence or until more Phalanx CIWS mounts were available. Stop-gap: the BMARC GCM-AO3-2 mount for twin Oerlikon 30mm, each capable of 650 rpm.
One of the mounts on either HMS Fearless or Intrepid managed to shoot down an Argentine A-4B Skyhawk during the Falklands war of 1982. This weapon entered service with the RN in 1941 and was still in widespread use in the 1980s. The Bofors 40mm L/60 on the electrically-powered Mark IX mount could fire up to 120 rounds per minute. The cylindrical drum magazine was changed by hand. This was a crude but reliable weapon with a rate of fire between 500-800 rounds per min. They apply best practices, lessons learned, repeatable processes, common architecture, and common and shared services to accelerate and optimize transformation.Gunners on a Type 21 frigate during the 1980s operating the same weapon used by their grandfathers in the war – the Oerlikon 20mm Mk 7A. CALIBRE brings enterprise digital modernization technologies and methods to support the Federal mission and modernization mandates. They transform legacy systems and ease adjustment to new systems, often helping organizations adapt to significant operational changes required for successful results. CALIBRE effects digital transformation for organizations that collect, store, analyze, and share high volumes of complex data. They develop innovative and leading edge solutions that optimize investments for growth in utility over time. Their solutions give organizations the tools to run at peak efficiency through managing your supply chain well. They recognize that the success of a company is dependent on the ability to generate actionable data and adapt the company structure accordingly. CALIBRE provides solutions that present clear, understandable visuals of organizations’ data to enable effective management of cost and logistics so that maximum business performance is achieved.
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