Boat U.S. - March 2009 - (Page 75)

format than a number for a vessel. If BoatU.S. can’t issue an MMSI to a shore station, where would it come from? Herman H. Franke Wilmington, NC All VHF shore stations must have an FCC-issued license. New licenses will be issued with an MMSI. Existing stations that wish to use DSC hailing must apply to the FCC for an Windlass Control Circuit administrative update. Call (888) CALLFCC and choose option two. A fee of $115.00 is charged for the assignment of 1 minus 12 volt licensees. the MMSI, except for government or -nonprofit DC (Ground) A. pumped. You can verify this by removing the tank’s clean-out cap or disconnecting the hose to the vent during the next pump-out. If the tank’s contents can be pumped out, the vent is causing the problem and needs to be cleaned. Series Addition Q. William Dieffenbach Medford, NY A. Your proposal to use two, series-connected 12-volt bat- teries to power a 24-volt windlass will work well. A doublepole, double-throw power relay will be required to switch the second battery from its normal connection, positive terminal connected to the boat’s 12-volt bus, to the windlass polarity reversing relay and to connect the negative terminal of the second battery to the positive terminal of the first battery to create the 24-volt potential. The standard polarity reversing relay will be needed to allow both up-and-down operation of the windlass. Be sure to properly fuse the circuit. Hold It have a 1995 Rinker. I can’t get my holding tank to empty. When I first hook up to the pumping station, it seems to be ok, then it stops pumping out. A quick look in the holding tank reveals it is still more than half full. The problem is not at the marina because it happens at whichever one we use. Guy Fahrner Buffalo, NY suspect there’s a partial blockage in the holding tank vent line. The vent may be permitting air to escape when waste is being added to the tank but blocking the flow of air needed to allow the rapid withdrawal of waste when the tank is being Windlass Control Curcuit 1. minus 12 volt DC (Ground) connection. 2. Plus 12 volts from boat’s electrical system. 3. To windlass reversing relay. 4. Switch for energizing windlass 24 VDC power. 5. minus 12 volts (Ground) to coil of double pole, double throw power relay used to connect the two, 12 volt batteries in series to provide 24 volts to the windlass. 6. Coil of 12/24 volt change over relay Q.I Uneven Performance I have a 30-foot Luhrs with twin 270-hp Crusader engines with carburetors and electronic ignitions. After starting the engines, putting them in gear, and advancing the throttles, the port engine runs up to 3,000 rpm but the starboard engine flattens out at about 1,500 rpm. If you leave the throttles in that position at least 15 minutes or more, the starboard engine slowly Q. A.I Chuck’s Here To Answer Your Questions Technical editor and whiz kid Chuck Husick — engineer, sailor, pilot, former president of Chris-Craft — welcomes your questions on diesel engines, new gear, and the latest technology. No worries, Chuck’s here for you: AskChuck@BoatUS.com. Read more articles by Chuck at www.BoatUS.com/Husick BoatU.S. Magazine March 2009 diagraM by joe van veenen I just bought a used Lofrans Leopard windlass rated at 1,200 watts and 24 volts. I’d like to use it on my Marine Trader trawler, and connect two group 27 batteries in series by using two 12-volt solenoids in order to get the 24 volts required. Is this a viable system? connection. 2 - plus 12 volts from boat’s electrical system. 3 - to windlass reversing relay. 4 - switch for energizing windlass 24 VDC power. 5 - minus12 volts (Ground) to coil of double pole, double throw power relay used to connect the two, 12 volt batteries in series to provide 24 volts to the windlass. 6 - coil of 12/24 volt change over relay. http://www.BoatUS.com/Husick

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Boat U.S. - March 2009 Contents Reader Forum Boat U.S. Reports What’s New In The Brew? The Perfect Paint Job Launch Into Spring Boats Gear Wheels One Mom, Two Teens, No Exit So, Nigel Had This Idea Ice Devices It Was A Club Of Their Own Expanding The Boating Universe Tech Connection A Case Study In Getting Results Let’s All Do This Together Classifieds Member Benefits/At Your Service

Boat U.S. - March 2009

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