Kevin sent me another photo by John Johnson of tugs TIC TUG NO 2 and COBLE DENE heading up river past Newcastle Quay.
To me it looks like COBLE DENE is under tow and I wonder if this is her on the way to the breakers.
For details see: http://www.tynetugs.co.uk/nerno51922.html
and: http://www.tynetugs.co.uk/cobledene1883.html