Engineering giant Wärtsilä Corporation said it will upgrade the main engines of four DSD Shipping vessels with its Retrofit Pulse Lubricating System (RPLS).

The RPLS has been designed to lower the oil feed rate to the engine, which will reduce the consumption of lubricating oil.

The new cylinder lubricating system will also allow the company’s 105,000dwt vessels to improve efficiency, reduce shipping costs and lessen environmental impact, Wärtsilä said.

The Norwegian shipping company’s three vessels are currently equipped with six-cylinder RTA58T engines while one vessel operates a seven-cylinder RTA62U.

In addition to the RPLS, the installation will include the MAPEX-PR online liner wall temperature monitoring and alarm system, and a propeller shaft power measurement system.