Complex sentence: An interesting postscript to the story is that a unidentified sub with very lage guns was found off the Massachuttes coast the sub is now known as CA-35 after the Kreigmarine Grid it was found in.
Split into simpler sentences: An interesting postscript to the story is that an unidentified sub with very large guns was found off the Massachusetts coast. The sub is now known as CA-35 after the Kreigmarine Grid it was found in.