Richard R. Hobbs Related books Marine Navigation Workbook Naval Inst Pr • 1997 Marine Navigation Workbook: Piloting and Celestial and Electronic Navigation Naval Inst Pr • 1990 Marine Navigation: Piloting and Celestial and Electronic Navigation Naval Inst Pr • 1998 Marine Navigation: Piloting and Celestial and Electronic Navigation (Fundamentals of Naval Science Series) Naval Inst Pr • 1990