In Maiden Voyage she navigated by sextant and charts. That was pre-GPS.Thanks for the great advice everyone. Due to the multiple recommendations for books in general, and specifically for that about Solcum's adventures and Maiden Voyage, we opted for the latter. We think this relatively recent account (compared to that of Slocum's) of a voyage taken by someone near his age, will really resonate with our nephew.
Best regards,
Jim