Back in 2003 (in my younger years) I did a delivery trip from Bahrain to Trinidad on an ancient Amercian tug: the Justine, together with a similar vessel, the Martha. This turned out to be a remarkable trip which I still remember. I have written about it before in this post: Rats, rust and 2 old ladies.
Incidently I only recently found out something more about the history of these two tugs; they have been working on my regular stomping ground: The North Sea. Please see below pics from Shipspotting.com where both can be seen in Great Yarmouth.
The Martha (ex-Martha Theriot), now called Achilles.
The Justine (ex-Toya Alario), maybe still called Justine.
And from what I can find on the interwebs at least the Achilles is still working, she can be seen in this fleet overview from A.R. Singh Contractors. I’m not to sure about the “active”-status of the Justine.