by Steve Henkind, Posted November 21, 2008GPS has greatly simplified certain aspects of navigation; at the mere touch of a button, a boat’s position can be determined within about 30 feet. Despite the reliability of these devices, boats are still being damaged because of navigational errors. After several decades of both navigating and teaching navigation, I’ve suffered a few close calls of my own and can recommend some ways to use your
by Steve Henkind, Posted November 20, 2008Chartplotters are powerful extensions of GPS technology and provide tremendous convenience, but they can get you into trouble if you’re not careful. While my focus is on vector-based plotters (digitized charts, which are the ones typically found on recreational sailboats), most of my observations also apply to raster-based (scanned charts) plotters.Scale change matters.
by Sail Staff, Posted May 2, 2006Chart Smart (July 2006)We arrived off Suva, the capital of Fiji, after a 10-day passage from New Zealand. While we knew the island of Viti Levu was about 5 miles off our bow, we couldn’t see it because of a heavy rainstorm. My husband, Bob, turned on the computer and looked at the electronic charts we had added to our navigation suite a few weeks earlier. We wanted to use them to
by Sail Staff, Posted March 27, 2006Signal Advantage (March 2006)If you have an on-the-water emergency during the day, keep in mind that a mirror is a very effective signaling device. If the weather is clear and there is sunlight, the reflection from a mirror can be seen up to 100 miles away. While it does need sun, a mirror doesn’t depend on batteries, satellites, or the electronic watchkeeping of a potential