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Compass
A compass can be used to help steer when land is out of sight and a boat operator is confused or disoriented.
Navigation out of sight of land using the Polar Star.
Out of sight of land they used astral navigation. The got as far afield as the Canary Islands and Cornwall.
Coastal navigation is transport by sea or inland waterways. The coast is rarely out of sight and so position can be confirmed by land features and navigation marks, such as light houses and buoyage.
Dead Reckoning
By sails and oars. They could also travel out of sight of land by astral navigation.
Lockheed Martin produces navigation instruments for land, sea, and air use. In 2002 the company reported annual sales of $26.6 billion and employed 125,000 workers.
Drowning with Land in Sight was created in 1994.
The Columbus crewman to first sight land was Juan Rodriguez Bermejo.
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The cast of In Sight of Land - 1991 includes: Diana Quick as Gabrielle Shepherd Nigel Terry as Kryzstof