robert1952:
We were informed on a parallel thread today that the top ERF (of the pair above) was operated by Estra BV in Rotterdam, where apparently it was based. It’s on UK plates and did cross-channel work. So I suppose it could be classed as a subbie. I wonder if the fleet number reflected that. Robert
I think that 5th Dragoon would know more about this, if so I stand corrected. In those days Calor was owned by Imperial Contenental Gas as I believe was Estra hence the link. The ERF reg number HMO looks like a Calor registration and the fleet number certainly looks like a Calor one as well. Also it appears that the door had a Calor logo one but has been removed.