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The BLUEBACK, like her two sisters, was a diesel boat. Meaning it was married pretty much to the surface or snorkel depth whether the seas were calm or boiling. If on the surface, and the weather gets foul, it's bad ju-ju to dive the boat to get out of the weather, as there is a brief window as the ballast tanks fill where free-water might get away from you and roll the boat.


So, Diesel boats tend to ride it out on the surface no matter how bad the weather gets.


Believe me, I know, I was on the TRUTTA standing bridge lookout watches during many squalls and one hurricane and we took face fulls of green water for hours on end (Our GUPPY-2A had a stepped sail that put our pusses only fifteen-feet above the water. If you didn't duck behind the deadlights a wave could throw your inattentive ass back into the sail and you'd wake up wrapped around the periscope shears.


That hemispherical clear acrylic windshield. Useless!


Not TRUTTA, but representative of a GUPPY's stepped sail


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