Tidal Thames creeks

[mersey]

Where is the 'calm as a millpond' picture location? Lovely shot.

That is the exit to Limehouse.

 

[Scholar Gypsy]

I'm still confused as to how water can enter the boat via the exhaust.(unless it's a totally different set up on a NB compared to a cruiser) My old boat had elbows turning the pipe into the water and my new Broom has her exhausts partially submerged.

They're a couple of great pics pics. The NB looks very stable despite the wash.
Where is the 'calm as a millpond' picture location? Lovely shot.

The millpond is at Limehouse, about 0530.

Most NB exhausts are dry, and with a straight run up from the engine to a hole in the transom. If the engine is running then I wouldn't be too worried about a bit of water getting in, it would boil off PDQ. But if the engine was stopped it would be quite feasible to get a cylinder full of water, through the exhaust valve, which would be rather unhelpful.

https://nbsg.wordpress.com/2018/05/20/spcc-to-margaretness-and-teddington/

 

[TrueBlue]

I thought it was 'best practice' to fit a water-block device to reduce the risk of engine flooding in NBs with fresh water heat exchanger cooling?
That's what I did on the advice from 'experts'.

 

[ianc1200]

Our "telescopic" narrowboat exhaust.

See fourth photo down.

http://www.tuesdaynightclub.co.uk/Tour_01/Medplus5a.html

 

[rotrax]

I thought it was 'best practice' to fit a water-block device to reduce the risk of engine flooding in NBs with fresh water heat exchanger cooling?
That's what I did on the advice from 'experts'.

A proper NB exhaust exits vertically through the engine room roof. A good one might blow smoke rings if the tickover is slow enough.

I can still remember the unmistakable sound of a Bollinder's single semi diesel with the hit and miss govenor pulling a loaded Butty up the Hatton flight.

 

[CJL]

This safety bulletin from the PLA nicely demonstrates the problem of exhausts close to the waterline on NBs.

http://www.pla.co.uk/assets/sb1of2012-narrowboatsinking-inadequateventsfreeboard1.pdf

CJL

 

[Gumpy]

The cause of that sinking was an air intake.

 

[Actionmat]

Tidal Thames and no lifejackets? Worthy recipients of a Darwin Award.

 

[rotrax]

As in a Landy solution, I did wonder if it was intakes and not exhausts that the snorkel was protecting.

Yes, but many old generation NB engines were air cooled, not just for the air required for combustion. The air volume required for effective cooling had to be admitted-and exited-as well as that for combustion.

The calm waters of most inland canals are a far cry from the tidal Thames below Tower Bridge and those that were not able to keep water out of the hull were soon in trouble!

The exhaust outlet pressure of a horizontal exhaust when running was able to keep water out, the vertical exhaust's on proper working NB's required a cap when not running to keep the rain out.

Hence the old paint tin often seen on the top of a Trad NB's ex pipe......................................

 

[JumbleDuck]

I enjoyed reading the account and looking at the pictures.

Very enterprising and quite courageous I think!

+1. Boating meets urbex - looks like fun.