Recommended Marine Apps for Tablet??????

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Propwalk said..
Backup to the backup see below,

A Zeiss Frieberger sextant!!! Very nice. I learnt basic celestial navigation on one of those sailing from Tonga to Fiji then to Sydney in 1979. I could still give you an accurate elevation from the sextant but the use of tables etc to reduce to a Line of Position is all forgotten now.