(1) The UK Hydrographic Office:Admiralty Raster Chart Servicr,
1996.
(2) C−MAP:C−MAP Electronic Charts.
(3) 今井健三、三井孝之:電子海図の表示仕様と表現上の課題、航海、平成6年3月(1994)
(4) 日本航海学会:IBS特集号、航海、平成5年6月(1993).
(5) Alexander,L.Ganjon, F.K., and Edward, LT.H:Use
of Didital Nautical Chart Data for Vessel Traffic Service, ??th IALA Conference,
19 Feb.-1 Mar. 1994, Honolulu, HI.