Thanks for the engine info. My guess was 80hp so assume you have a sizeable reduction gearing between engine & propeller shaft. Great to watch the the unit make easy work of the ice.
Hi Mike Good vid, Mr E C Jones has a lot to answer for with his idea of Pushing craft instead of towing ,Nowday's nearly all tugs push craft ,it goes to show that his idea of 70 yrs ago was right.
Might be doing his bit to repair eroded and damaged Banks, but Travelling at that Speed and generating that Bow Wave, He is certainly doing more than his fair share of damage and erosion to those self Same Banks.
With such a blunt bow you don't need to go fast to make an impressive looking wave, but it isn't the waves that cause bank erosion on canals are the speeds are too slow, it's the wash caused by the boat in a constricted channel. The bits were I was flooring it was were we just dredged and was pilled both sides. It helps level the bottom out as the digger takes chunks of silt out.
The banks there are piled - in fact we'd just installed Nicospan on the offside to hold the dredgings. Believe it or not, this is about 4 mph, the flat front on the pan just produces rolling waves which don't actually hold much energy anyway - it's the wash caused by the boat displacement and the water used through the prop that causes the damage on canals.
You need to understand what is classed as breaking wash on a canal. Because the speeds of these vessels is under 4 mph, the bow waves are un-important as there isn't enough energy in them to damage even the unmade banks. However because canals are a confined channel, the water rushing to get around the boat, and through the prop, can cause a low presure area at the stern. It is this that needs to be controlled where the bank is weak. However the sections shown are piled and so no bank damage is done. The flat bows on these pans cause a sharp wave which looks bad but isn't.
That looks faster than 4mph 😁
Thanks for the engine info. My guess was 80hp so assume you have a sizeable reduction gearing between engine & propeller shaft. Great to watch the the unit make easy work of the ice.
Hi Mike Good vid, Mr E C Jones has a lot to answer for with his idea of Pushing craft instead of towing ,Nowday's nearly all tugs push
craft ,it goes to show that his idea of 70 yrs ago was right.
Pleas keep making vids. Yours are my favorite.
now that - is an ice breaker
Might be doing his bit to repair eroded and damaged Banks, but Travelling at that Speed and generating that Bow Wave, He is certainly doing more than his fair share of damage and erosion to those self Same Banks.
With such a blunt bow you don't need to go fast to make an impressive looking wave, but it isn't the waves that cause bank erosion on canals are the speeds are too slow, it's the wash caused by the boat in a constricted channel. The bits were I was flooring it was were we just dredged and was pilled both sides. It helps level the bottom out as the digger takes chunks of silt out.
Ah i missed the " great part "..... help please.
can he get prosecuted by waterways for damage to banks caused by speeding and excessive wash ?
The banks there are piled - in fact we'd just installed Nicospan on the offside to hold the dredgings. Believe it or not, this is about 4 mph, the flat front on the pan just produces rolling waves which don't actually hold much energy anyway - it's the wash caused by the boat displacement and the water used through the prop that causes the damage on canals.
watch your waves :-)
What engine & HP in Myaskin?
Lister HRW3 46.5 HP @ 2200 says the spec
Going rather fast thru thew ice
If I went slower the ice would bring the tug to a stop!
breaking wash, well over the speed limit !
You need to understand what is classed as breaking wash on a canal. Because the speeds of these vessels is under 4 mph, the bow waves are un-important as there isn't enough energy in them to damage even the unmade banks. However because canals are a confined channel, the water rushing to get around the boat, and through the prop, can cause a low presure area at the stern. It is this that needs to be controlled where the bank is weak. However the sections shown are piled and so no bank damage is done. The flat bows on these pans cause a sharp wave which looks bad but isn't.
@@mykaskin Interesting