In sink the shigure, at the end you referred to the rank of Master Chief. The rank of Senior and Master Chief was not established until 1958. I understand that Authors often embellish their stories to make for a more enjoyable read, however this reference should have been caught by the many proof readers. Overall, enjoyed the book.
Thank you for catching that! Yes, that is completely my own error. I’m glad it didn’t get in the way of making the story entertaining. – RCC