Safety & Seamanship

Still awaiting FCC approval, the 4.2-ounce SafeLink R10 from Kannad Marine (www.kannadmarine.com) has a 2-watt transmitter that operates on the VHF frequencies used by AIS (Automatic Identification System). Equipped with a built-in GPS receiver, it sends a structured alert message, GPS position data, and a special identity code to AIS receivers within about four miles. The position data is updated every 60 seconds. (The first alert, 10 seconds after immersion, contains no GPS data.) Battery life is 24 hours, with a storage life of seven years. The beacon must be manually activated, but it can also be professionally installed to activate when an inflatable life jacket inflates. Retail price is set at $349.

Any device designed as a man overboard alarm must have a bulletproof means of attaching the device to a person’s body or apparel. When you hit the water from 15 feet, the force of impact alone can rip a ring from your finger. Some units will only work when submerged, requiring careful thought into how and where the pendant will be worn.

Aqua Signal Corp. (www.aquasignal.info) recently recalled a small number of its popular Series 40 bi-color navigation lights. The recalled lights, manufactured between November 2010 and February 2011, were made with the colored lenses reversed—with the red lens on the starboard side and the green lens on the port side.

Practical Sailor tested a prototype of Greatland Laser's Green Rescue Laser a few years ago, and we took the opportunity to check out a production model for this report on the visual distress signals. The Green Rescue Laser flare looks like a mini-Maglite with anodized aluminum bodies, measuring less than 5 inches long and 7/8 inches in diameter, and weighing 3.3 ounces. In tests, the green laser's exceptionally brilliant light proved to be visible from greater distances than red laser flares, flashlights, and strobe lights; its signaling capability lasts hours rather than the minutes of pyrotechnic flares; and its green light is easier to spot against a cityscape than a white flashlight. Waterproof to 80 feet, the Rescue Laser is compact and can be reused, doesn’t expire, and can be carried through airport security. While it would be a good addition to a ditch bag or foul-weather gear, it's not a replacement for aerial flares, in our opinion, and its $250 price tag is a hard pill to swallow.

Every two years, some 150 offshore sailboats line up in Newport, RI, to race roughly 650 miles to Bermuda, a semi-tropical island in the western Atlantic, almost due east of Charleston, SC. While this is a relatively short ocean passage, it is not always an easy one. Boats have met serious gale conditions and dodged hurricanes during past editions of this race.

Sometimes, it seems that safety is a dirty word in the boat-building industry. A favorite marketing catchword is “blue water cruiser.” We assume this means a boat capable of going to sea, rather than a boat designed to tiptoe along the shore.

Due to the litigious environment in today’s society, I feel compelled to advise that fuel tanks used in boats-especially those used to store gasoline or alcohol-based fuels-be built by persons or firms specializing in the manufacture of marine tanks.

Of course, everything on a boat is a compromise, and so it is with propane. It has two nasty traits that must be dealt with: Propane is heavier than air, which allows the gas to collect in the bilge in the event of a leak; and propane is explosive when it collects in such places.

Every year, a surprising number of boats are struck by lightning. Almost invariably, there is some damage to the boat or its equipment. The damage can range from minor electrical problems to serious hull damage.

For the boat owner customizing his boat, the choice of wood to use in a project can be as interesting as the design or execution of the job. Because of the overwhelming use of teak and mahogany in boatbuilding today, this opportunity to select a different wood is often overlooked.