Building our first boat, a 45 foot fiberglass Roberts, 1976 in Victoria Australia. When completed in 1978 we sailed her back to California via the Pacific islands. (I also laid up a 50 another 45 and a 32 for other people) Back then no GPS,the only electronics was a spinning depth sounder. Navigation was with a sextant and a clock with a bunch of published tables. No sail furlers, windvanes,solar panels or electric windlass's, times have sure changed!