抄録
The auther tried the study and evaluation of the Loran-C Navigation System. In order to investigate the practical adaptability of the Loran-C manual receiver indicator into merchant marine, the auther made an experiment on board M.S.Hudson-maru, of the Mistui-O.S.K. Lines Co., Ltd.. This is a report of the actual measurement and this report will contribute to make a use of the manual receiver indicator in the Loran-C Navigation System though more and more data must be taken for the final conclusion of the adaptability of the manual receiver indicator into the Loran-C Navigation System which has been developed for full automatic use.
