Wrong ship!
First things first, then the nitty-gritty!
Thanks Bob and Geordie Chief for saving me from spending the rest of my days doubting my sanity (however, come to think of it, I do that on a daily basis anyhow!!!).
I said that I thought the ship, with the double-acting four-stroke engines was "Brittanic". I was wrong as she actually had a combination of up-and-downers and turbines.
I found-out, from t'Internet, ( Pounders 8th. Edition), that there were two ships fitted with the B&W four-strokes and they were the Swedish America "Gripsholm", (1925-built), and Union-Castle's "Caernarvon Castle" of 1926. (Incidentally there's very little to be found-out, even from said Internet, about these engines, although having just typed that, I never looked on B&W's site (if they have one) to see if they have a historical section. Memo to self:- Your next task, after submitting this, is to check for a B&W site!!!!).
Now, being as "Caernarvon Castle" wasn't scrapped until 1963 surely there's someone who sailed on her, (who is on this wonderful site), can give us a bit of an insight as to what these engines were like to work on?
Or was the ship re-engined at some time?
Thanks, again, Bob and Geordie Chief. Salaams, Phil(Hippy)