Passing The Test, Ready To Run

Wärtsilä X72 and X62 engines designed for mid-bore end of market; available with 4 to 8 cylinders

Posted on June 18, 2014

The Wärtsilä X72 and the Wärtsilä X62 two-stroke engines have successfully passed important tests that verify various performance criteria, the company said.

The type approval test (TAT) for the X72 took place at the premises of Wärtsilä's licensee, Doosan Engine Co. Ltd., in Changwon, South Korea, verifying the engine has fulfilled all classification society requirements, including meeting the SOLAS (Safety of Life at Sea) standards. This was followed by a successful sea trial carried out by Dalian Shipbuilding Industry Corp. (DSIC).

The first X62 engine successfully passed its factory acceptance test (FAT), verifying that the engine fulfills the design criteria for performance and functioning, and that it has been accepted by both the customer, Kyklades Maritime Corp., as well as by the classification society Det Norske Veritas (DNV). The tests were carried out at the Hyundai Heavy Industries Engine and Machinery Division (HHI - EMD) factory in South Korea, where a series of four engines is being produced under license from Wärtsilä for Kyklades. The engines have been ordered to power four 115k Aframax Product Carriers being built by the HHI Gunsan shipyard.

The X62 covers an overall power range of 6600 to 21 280 kW at 80 to 103 r/min, while the range of the X72 is 8880 to 28 880 kW at 69 to 89 r/min. Both engines are available with 4 to 8 cylinders.

Wärtsilä said the X72 and X62 engines cover the mid-bore end of the market. Typical applications include Panamax to Capesize bulk carriers (60 000 to 210 000 dwt), Aframax to Suezmax tankers (80 000 to 200 000 dwt), and container feeder vessels (1600 to 4500 TEU).