LR ice class for Dynagas LNG carrier newbuilds
Greek-owned shipping company Dynagas has taken delivery of two new LNG tankers from Hyundai Heavy Industries in Ulsan, Korea.
The two 155,000m³ membrane-type gas carriers, Arctic Aurora and Yenisei River, are fitted with GTT Mk III containment systems. Propulsion for the ships is provided by a duel-fuel diesel generator engine system, based on four Wärtsilä-Hyundai diesel engines powering two propulsion motors driving a single FP propeller.
The ships have been classed by Lloyd’s Register of Shipping, with a design complying with LR’s Ice-Class and Winterisation Rules for operation under harsh Arctic conditions, and the ShipRight FDA plus notation for a 40-year North Atlantic fatigue assessment. The ships have been constructed in accordance with ShipRight construction monitoring procedures, and built to LR’s environmental protection ‘ECO’ notation including an inventory of hazardous materials. The new ships use LR’s trim optimisation technology for operational best practice and potential for fuel savings. The bridge design complies with LR’s NAV1 notation, for safe periodic operation under a single watchkeeper, and with IBS requirements for centralised monitoring and control of navigational functions. The engine room arrangements conform with LR’s integrated computer control notation. Accommodation is designed and built in accordance with latest MLC 2006 requirements, and the ships have been enlisted in LR’s ship emergency response service (SERS).
Jose Navarro, gas technology principal specialist, Lloyd’s Register, said: "It is a great honour to have been chosen to class the lead ships in this project - a continuation of our strong relationship with Dynagas and a milestone for Hyundai Heavy Industries. We have worked closely with HHI in supporting and helping enable the technological development required in these ships. A key achievement was implementing a fully automated bonding system for the cargo containment system’s secondary barrier which was achieved using polyurethane glue. In addition, the primary barrier has been reinforced with ribs and wedges to enhance its sloshing resistance."
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