Figure F3. Location of Site 1183 and site-survey data on satellite-derived free-air gravity map (after Sandwell and Smith, 1997). Navigation for Hakuho Maru KH98-1 Leg 2 survey, lines 404 and 501, is shown in Julian-day time. Water depths in the survey area are between 1500 and 2000 m (IHO/IOC, 1997).