Plastic sextants are practicable at sea and preferable near land

Last NTM: 15-Mar-2019

Karlsen has done extensive researching on the Viking 'sunstone' and 'horizon board' and explains how they work

Last NTM: 22-Jul-2016

Karlsen has 45 years of experience at sea

NGA Chart 29128: Corry Island to Robertson Island marine navigation Plastic sextants are practicable atScale: 1: 200,000 Captain's Supplies is a Print on Demand nautical chart dealer for NGA Charts. Charts are printed on high quality heavy paper with waterproof ink. Other options available. NGA charts are printed using the most recent data provided by the National Geospatial Intelligence Agency (NGA). Much of this data may no longer be current. Boaters are advised to consult the "Corrected through NM ## ##" note in the margin of the chart for