Lovely familial sound of the Mirless ticking over. I noticed the valve springs seem to be housed within the cyl. head. The mirless I worked on the springs were open and the valve stems carboned up when doing a lot of slow running. We had a special tool for bouncing the springs prior to starting in order to flake off the carbon and ensure the valves closed promptly.

The famous KSS Mirrlees , it was the forerunner to the K Major, they were the donkey of the manufacture, they just keep going, ive rebuilt a few in my time along with the K majors. They really are bomb proof.

Im not involved but do work on the River Thames so follow the history of these old sun tugs. There is only 1 left on the Thames itself and very few in the world, a couple in greece etc. Great to see these still running and earning a living

Thanks for the information. Were you involved with any of the Saga tugs?? If I find out anything about Saga Moon I will let you know... I'm happy that you found the photos I put on my forum. I love these old tugs!

Great video (and photos on the forum) of this ex SUN tug. Great to see she is still going. Sadly SAGA STAR i believe caught fire last year or in 2011 and was scrapped. SAGA MOON i believe is also still operating locally to SAGA SUN?

The saga star/ sun /moon was operated by Tiapan shipping in trinidad.

What would be the fuel consumption on this at 460 rpm?

Is she still in St Lucia?

‘2100hp’ And yet the class 60 ‘tug’ has 3200hp..