Offshore Mast Cranes - Huisman Markets Offshore Wind Oil and Gas Geothermal Energy Civil Works Port Logistics Leisure Contact Sales Products Cranes Pipelay Systems Renewables Solutions Drilling Systems Offshore Wind Installation & Deck Equipment Heave Compensation Anchor Handling & Deepwater Winches Rentals and retrofits References Brochures Contact Sales Services myHuisman© Training Programmes Upgrades and Modifications Parts Delivery and Advice On-site Support Remote Assist Whenever and wherever you need us Service agreement Brochures Contact Services Emergency telephone +31 88 070 26 22 Careers Working at Huisman New Perspectives View our vacancies Contact Recruitment News and downloads Brochures Product sheets News Articles Subscribe to our newsletter About Huisman Company Profile QESH Mission, vision and values Terms and conditions Huisman worldwide Contact us Login contact Translate Google Translate English 中文 / Home Products Cranes Offshore Mast Cranes share this page Facebook Twitter LinkedIn Mail Print Link Copy link / Offshore Mast Cranes Huisman’s Offshore Mast Crane (OMC) is a compact design heavy lift crane using state-of-the-art technology, resulting in a lifting capacity up to 8,000mt. The OMC is designed for use on offshore construction vessels or semi-submersibles. Many of the OMCs are suitable for ultra-deepwater operations in depths of up to 5,000m.    The small rectangular footprint of Huisman’s OMC allows for easy integration with the vessel's steel structure and direct installation of the crane on the stern, achieving a large effective outreach and reducing costs for integration. Huisman’s OMC is lightweight as the crane is built up from high tensile steel and doesn’t require ballast weight. The height of the mast provides a superior load curve compared to traditional cranes, especially at larger radii.   The OMC uses a deepwater hoist system with a single line capacity of up to 300mt. The deepwater hoist system consists of a traction winch and a storage winch. The vessel functionality can be extended by outfitting the OMC with an ultra-deepwater hoist system. When this is the case, the traction winch is either installed inside the crane or in the hull of the vessel. Quick links Video photos technical specifications 400mt Offshore Mast Crane, Hai Yang Shi You 286, COOEC 400mt Offshore Mast Crane, Seven Oceans, Subsea 7 1,800mt Offshore Mast Crane, OOS Gretha, OOS International 3,000mt Offshore Mast Crane, Lewek Constellation, Ezra 4,000mt Offshore Mast Crane, Aegir, Heerema 5,000mt Offshore Mast Crane, Seven Borealis, Subsea 7 / features Lifting capacity up to 8,000mt; Superior load curve; Large effective outreach; Small rectangular footprint; Simple integration with vessel structure Low own construction weight; Minor tail swing, saving deck space; Low centre of gravity; Ultra-deep water installation system (optional); Active & passive heave compensation system (optional); Stinger suspension from mast base (optional); Fully electrically driven.  / brochure Cranes Brochure Download brochure All downloads Please enter your contact details. You will receive an e-mail with your personal download link.   Name * Mandatory field Company * Mandatory field Email address * Mandatory field Country * Mandatory field   Cancel Download Close / references / 4,000mt Offshore Mast Crane / 5,000mt Offshore Mast Crane (upgrade) / 400mt Offshore Mast Crane / tell us about your challenges Contact your Sales Manager or our Sales Team +31 88 070 2222 sales@huisman-nl.com / Terms Privacy policy Cookie statement Disclaimer Responsible disclosure / contact Head office Sales Service Sales Recruitment / follow Huisman Copyright 2026 © Huisman Equipment B.V.