Time Trap

A Coast Guard cutter spots an ancient Portuguese galleon and the crew find themselves in a strange world which transcends time "He was seen - and photographed - in a Tunisian bazaar. And an ancient Spanish galleon, fully crewed with ancient Spaniard, was taken in tow off Tampa by the Coast Guard ... and a few luckless people found themselves living the same day over and over and over ... Something was badly wrong with Time - but Roger Tyson didn't know it until he met the lovely agent from elsewhen and started on a mad chase through the dimensions, plagued by a motley bunch of temporal castaways, and pursued hotly by Oob the Rhox!"--Goodreads website