The Ship's Cat is a book about a group of idealistic westerners aiding the effort of Biafran Independence in 1967. Written by Jock Brandis who participated in the effort to write the fictional account decades later.
Another (unconnected) book with the same title was written by James Aldridge.
"The Ship's Cat", Jock Brandis; Writers Club Press (September 2000); ISBN 0-595-12997-8