I was Second on the Irving Canada also, although I had an Extra Chief's ticket at the time the Canadians wouldn't recognise that because of a spat with the MCA over British Recognition of Canadian tickets, they would only accept my (Older) 2nds ticket. It was my first trip back to sea after my Honeymoon and the employers I had been working for before, Hays Ships UK, told me all 5 of their ships were laid up without work, and I had to look for a new job, it was the only one immediately available. A change from being Chief Engineer on a brand new Diesel Electric, DP, ROV support ship, the Kommandor Subsea, for the previous few years. I guess I spent most of the Winter of 1987/1988 on the Canada. The day after I joined Hays started repeatedly phoning my Wife, desperate to contact me, because they had a charter for the ship and couldn't find a Chief with Diesel Electric and DP experience, rare as hen's teeth in those days, wouldn't believe I had already joined another ship!!
It is always better to ask a stupid question than to do a stupid thing.