Mayday!

From Author Wars - https://authorwars.com/publications/mayday-888493.html

Overview:

Title: Mayday!
Author: Clive Cussler
Year: 1977
ISBN-10: 0722127391
Publisher: Sphere
Price: £0.85
Pages: 237
Binding: Paperback
Type: Novel
Title Reference: Mayday!
Notes: Price on back cover of Archive.org copy; other prices: Australia $2.75, New Zealand $2.75, Rep. of Ireland 93½p, Malta 90¢.