The Logan A-frame is a heavy weather, work class ROV launching system. It is designed for the ROV and a tether management system (TMS) on top. It can handle 17 MT overboard at a 5.3 m (17 ft) overboard reach.
It is said to have enough room to fully separate the ROV and TMS and stage them both on the A-frame deck, which is fitted with seal-welded drip pans to capture any effluent fluids and keep them contained. The Logan A-frame can launch and recover large, work class ROV-TMS combinations in a range of sea states.
Dean Carey, technical director, Logan Industries, said: “The unique low reach feature means operators will be able to grab and release the ROV lower than ever before, ensuring safe deployment in rough seas. Operators will be provided with simple controls and enough room to split the system while on deck.”
The A-frame, which weighs about 50,000 lbs, lays flat for shipping and requires an overhead crane to erect it and perform laydown. Its docking head features swing (inboard/outboard) and directional float and it can sway side-to-side on command.
The A-frame is DNV certified for operations and for lift at 0°C (32°F) and conforms to the following rules: ST-0378; ST-E273 (R-30); SWL: 37,500 lbs overboard; SWL: 31,000 lbs luffing.