Power Profile

MV Bubbles
Yanmar Australia

The ferry was originally installed with MTU Series 60 engines rated at 552kW @ 2300 rpm with 1.74:1 reduction gearboxes. After installing the YANMAR 6HY engines, with deeper reduction gearboxes, the ferry now has improved performance in acceleration, cruising speed and low speed maneuverability with greatly improved fuel economy.  The three reasons why the operator selected the YANMAR 6HY engine are; reliability, mechanical fuel injection for simplicity, and fuel savings, which the operator states he got all three and he could not be happier with his decision to go with YANMAR!

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Light Duty Commercial

Engine Brand:


Engine Model:


Application: Commercial Tour Boat
Vessel Construction: Aluminium
Vessel Name: “Bubbles"
Vessel Owner: Sapphire Coastal Adventures
Length: 23.5m
Weight: 45 tonnes
Engine Model: Yanmar 6HYM-WET
Engine Power Rating: 515kW (700mhp) @ 2,200 RPM
Drive Configuration: Shaft Drive
Gear Ratio and Model: ZF325A / 2.037:1
Electronic Control Type: ZF Clear Command Electronic Controls – 3 Stations
Cruise Speed: 15 - 20 knots
Top Speed: 26 knots
Date of Operational Check: 23rd November 2021
Installation Completed by: Broadwater Engineering, Pambula NSW

Disclaimer: Power Equipment provides this Performance Report for general information only. This data is accurate only as to the exact date, time and specifications set out in this Report. YANMAR makes no warranties as to the performance or fuel consumption of any boat equipped with a Yanmar engine as numerous factors affect actual performance of an engine.