All-in-one Yanmar SCR

STEERPROP INKS EXTENDED CBM CONTRACT WITH STEERPROP

Steerprop has signed a fi ve-year contract with Siem Off shore regarding the propulsion monitoring service Steerprop Care Premium for three of the Norway-based off shore vessel company’s platform supply ships

Steerprop Care is designed to enhance the availability of a vessel by continuously monitoring the health of the main propulsion system, revealing any changes in the behavior that could indicate upcoming maintenance needs.

Steerprop Care is designed to enhance the availability of a vessel by continuously monitoring the health of the main propulsion system, revealing any changes in the behavior that could indicate upcoming maintenance needs.

“Machine learning guides our experts in predictive maintenance to focus on the right measurements at the right time, revealing consequential changes in the behavior of the propulsion system,” says Jarkko Sirrola, PDM Manager at Steerprop. “With these insights, our team can work more efficiently, and we are able to provide information on equipment condition so well in advance that our customer can plan the upcoming maintenance as efficiently as possible.”

The contract with Siem Offshore demonstrated the marine industry’s increasing interest in streamlining the maintenance processes through online monitoring services, Sirrola said.

“The new level of predictive maintenance will ultimately lead to an enhanced availability of the vessel, increased safety and optimized maintenance based on the real requirements of the propulsion system”, he said. “This also makes it possible to lengthen the overhaul intervals, to optimise the spare part consumption, and to avoid unplanned maintenance.”

Siem Offshore’s contract covers the three 5,500 dwt platform supply vessels Siem Pride, Siem Symphony, and Siem Thiima, which are equipped with Steerprop’s propulsion units. The ships operate in Norwegian and Australian waters and the contract runs initially for five years.

Aaron Barbetti, Maritime Manager at Siem Offshore in Australia, said that Steerprop Care Premium appears to be the best and most efficient way to continuously monitor the state of the propulsion systems.

Steerprop offers segmented services ranging from a simple propulsion system condition monitoring service for the crew through to online services, Steerprop Care Plus and Premium, which offer more advanced predictive maintenance capabilities, and remote assistance.

8 Siem Off shore has

signed a fi ve-yearlong monitoring contract with for its three PSVs that are equipped with Steerprop’s propulsion system

Yanmar Rolls-Out Engine/SCR Package

Japanese four-stroke manufacturer Yanmar is to augment its marine lineup with a package solution integrating main engine and selective catalytic reduction(SCR) technology.

Although in-house development has seen SCR systems sold for some time as a separate product range alongside the engine portfolio, the new all-in-one offering features a 6AYE-M high-speed diesel and dedicated SCR arrangement. The six-cylinder, IMO Tier III NOx-compliant installation will cover ratings from 555kW to 749kW.

According to Yanmar, the unified technical approach has yielded a clutch of benefits, including design compatibility, optimised emissions control, and operational effectiveness.

The ready-to-install, factory-tested solution combining engine and SCR plant offers, for its target market, a favourable balance between power concentration and performance, while minimising emissions and providing optimal trade-off between exhaust temperature, pressure loss and durability, with integrated control and monitoring.

Acknowledging the limitations on space availability in engine rooms, and differences in machinery room layouts, the company has created two SCR options, namely end-in end-out(EIEO) and side-in end-out(SIEO), to afford more design flexibility. Overall height is consistent for the two variants, but length and width differ in both cases.

The 6AYE-M engine is a water-cooled, direct injection four-stroke of 155mm bore and 180mm stroke. In an IMO Tier III set-up, specific fuel consumption at the continuous 555kW/1,840rpm rating is in the order of 203g/kWh. At the 749kW/2,000 ‘S’ rating, the fuel burn is around 208g/kWh in the Tier III combination.

An early reference will be provided by the 24m newbuild under construction in Finland for Geological Survey of Norway(NGU). Also distinguished by a hybrid drive, the multipurpose research/training vessel has been specified with two Yanmar 6AYEM-GTWS common-rail engines incorporating SCR units. Distinct drivelines will render full redundancy.

IMO Tier III standard was a prerequisite of the project, and environmental expectations also determined the nomination of hybrid powering arrangements, offering scope for all-battery operation at low vessel speeds within a range of operating modes. Sea trials and delivery from the Kewatec yard at Porvoo are scheduled during the fourth quarter of 2022.