Abstract
The writer has planed and designed some new type of complemental tables and diagrams for astronomical navigation. Referring to similar study, he tried to make them for practical use because he himself is a navigation officer. 1. The Table of Time Lag and Max. Alt. Correction at Meri.-pass. 2. The Table of Time Lag and X-Meri. Reduction. 3. The Table of Time Lag and Star Identification. 4. The Diagram of Dep.-Δ・Long. 5. The Table of Time Lag and X-Meri. Reduction. These may help navigator's practice at sea.
