Friday, August 31, 2012

Two-Way Radio Communication


Two-Way Communication While Out Sailing – and why it’s important…

 

In this age of instant communication via “smart phone” some sailors have begun to question the need to have a two-way radio transceiver aboard their boat.  And, if there is a two-way radio, they might not turn it on at all.  Here are some thoughts:
First of all, cell phone coverage has some big “holes”.  In the inland northwest regions of Washington, Idaho, Oregon, and Montana there are many places where cell phone coverage is “spotty” at best.  Many of my friends complain bitterly that they spend lots of cash each month, but cannot use their “smart phones” for anything while aboard their boats.  The same thing is true at many of the ski resorts around the region – but that’s another story……  The point here is that if you are in trouble on your boat and are relying on your “smart phone” you might be surprised that you cannot make a call or a text.

Another problem with relying on the “smart phone” is that even if the phone works fine, you are probably calling someone who is nowhere near your location.  How is that person supposed to come to your rescue?  How is that person supposed to relay your information to someone else accurately?  Will that person have to patch you into some sort of conference call?  Don’t get me wrong - - I think that cell phones and other “smart” devices are terrific.  However, they are not the most efficient means of communication when your boat is in trouble.

Another thing to ponder if you don’t turn on your two-way radio is that you might be only a short distance away from someone in real trouble.  They might be calling a “Mayday” on their two-way radio.  If your two-way radio isn’t turned on, you’ll never hear the emergency call - - nor will you know that you could/should render assistance.  Personally, I would be mortified if I found out that I was the closest boat; that I could have helped; but that I never knew until someone back at the marina asked if I knew what had happened……

 

So, what kind of two-way radio is best.  Of course, best is relative.  And, best might have to do with what kind of radios most other sailors are using where you sail.  If most sailors are using CB radios, the CB is probably the best choice for you.  If most sailors are using VHF marine band radios, then VHF is the way to go.  If you are at sea, blue water voyaging to distant places you will probably have a single sideband radio or a “HAM” radio.  What are the differences?  Well, there are a lot of differences.  But, the most important difference is probably the transmit/receive range of the radio.  A CB radio transmits at about 5 watts and generally has a range of about four to five miles.  VHF marine band radios transmit at about 25 watts when on “high”; and those transmissions can be heard at distances of twenty to twenty-five miles.  Single sideband and HAM radios can often be heard thousands of miles away.  There are variables in transmit range such as how high up the antenna is mounted – the higher up the farther the range.

The important thing though is that your two-way radio should be similar to the radios most of the sailors in your area are using.  CB radios cannot hear a VHF transmission - - and visa-versa……  If your radio is similar to the radios that other sailors are using, then you improve your communication ability greatly.

Find out what channel most sailors are using to call other boats.  For CB that channel is often channel 9.  For VHF radios that channel is usually channel 16.  Know what the procedure is for using the radio.  CB radio procedures are much more relaxed than VHF procedures.  And HAM procedures are more involved than VHF.  Most of the sailors where Kathy and I sail are using VHF marine band radios and use channel 16 for initial calls and for emergency calls.  In the twenty-seven years Kathy and I have been sailing Snickerdoodle at Lake Pend Oreille, ID., I have been involved in three life-threatening rescue attempts.  The VHF radio was instrumental in all three.  If we had not had the radio on and monitoring channel 16, we would not have been able to help.
 
By-the-way - - - hand-held VHF radios are great… but, these two-way radios transmit with about 5 watts of power.  So, the effective range is reduced to about four or five miles.

 

So, have the right radio for your region and know the procedures for using that radio.
VHF procedures - - 

Use channel 16 to make emergency calls.  Emergency calls and special notification calls have set procedures.  There are three levels importance for these calls - - “Mayday, Mayday, Mayday” is the most severe and implies a life-threatening situation.

“Pan, Pan, Pan” (pronounced “pawn, pawn, pawn”) is for serious but not yet life-threatening situations.  I heard the 90-foot yawl Odyssey call a “Pan, Pan, Pan” one day when I was sailing in the San Juan Islands.  The Odyssey had a man-overboard.  The reason that they broadcast a “Pan, Pan, Pan” instead of a “Mayday” was that they were sure that they could rescue the victim who’d fallen overboard.  And, they were successful.  Their radio transmission was to notify other boats and the Coast Guard that they had a serious situation that they were dealing with.

“Security, Security, Security” is for information situations.  I remember once I heard the American aircraft carrier USS Kennedy making a “Security, Security, Security” transmission on VHF as she was about to enter the Strait of Juan de Fuca.  Her captain wanted to notify all boaters and sailors that this very large ship was entering the strait.  The Kennedy had restricted ability to maneuver and the captain wanted to make sure other boats stayed away.

If I needed to make one of these calls from Snickerdoodle, here’s what you would hear……  “Mayday, Mayday, Mayday – this is sailing vessel Snickerdoode – WSE-8015 – a 25-foot sailing sloop – at (give the location or latitude/longitude) – give the nature of the emergency aboard (fire, sinking, medical emergency, etc.) – Over”  

BTW: the WSE-8015 is my VHF call sign.  You don’t need to have this – I do have a call sign, so I broadcast that call sign.

Hopefully someone who can help will respond right away to your transmission.  If not, rebroadcast the message.

Use channel 16 to initially call the person/boat you want to communicate with.  Then, when contact has been established, switch channels to one of the “working” channels for personal/private communications (channel 9, 68, etc)

This contact transmission is pretty straightforward.  If I were trying to call my brother Bob aboard his sailboat Windsong you would hear - - “Windsong, Windsong, Windsong – this is Snickerdoodle – WSE-8015 – Over”

If Bob heard me, he would acknowledge by transmitting – “Snickerdoodle – this is Windsong – let’s go to 68”  We would then change channels to 68 and be able to talk with each other.  If other boats are already talking on 68 – we’d wait till they were through.  When I’m through talking with Bob on Windsong I’ll say, “Snickerdoodle back to 16”

So, have the two-way radio that is best for your region – the type that most sailors are using; know the procedures; and monitor the initial/emergency channel whenever you are at your boat.

And, please don’t make a call similar to one we heard a couple weeks ago where the caller’s engine had quit.  He was drifting toward a rocky shore about 300 yards away.  He identified himself as a 25-foot blue/white Bayliner near Granite Point.  Another boat immediately called back to let the first caller know that the rescuing boat was just leaving Garfield Bay about five miles away.  It would take the rescuing boat ten to fifteen minutes to get to the stricken vessel’s location.

Fifteen minutes later the first caller aboard the blue/white Bayliner called (with considerable distress in his voice).  He could not see the rescuer yet and was getting closer to the rocks.  The rescuer immediately called back saying that he was near Granite Point – but could not see any other boats – especially he could not see a 25-foot Bayliner.  This was when the Bayliner said that he thought he was located a couple miles north of Garfield Bay on the west side of the lake.  He thought the point was Granite Point.  I looked at my chart for Lake Pend Oreille and determined that the Bayliner was somewhere between Mineral Point and Camp Bay (a little more than a mile from Garfield Bay where the rescuer had come from).  The rescuing boat now had to drive back across the lake another ten to fifteen minutes.  We didn’t hear any more transmissions - - so, hopefully all went well after that.

Wednesday, August 8, 2012

Torqeedo Update




New Torqeedo Electric Motor Update.

You might remember that last April I posted the “I’ve Gone Green” addition to this blog.  Since then I’ve had several requests for additional information and photos regarding the installation and how the motor actually works.  So, here’s the update…


              
The Torqeedo model that I bought is the 2.0 Cruise Tiller model.  It is a 24-volt electric outboard motor that weighs about 40 pounds and has about 120 ft/lbs of thrust due to the big three-blade 10 X 12 propeller.  That is about the equivalent of a six to seven HP gasoline outboard.  The folks at Torqeedo rate the motor as appropriate for boats up to 6,000 pounds displacement.  With two 12-volt batteries, the total weight is about the same as my 100 pound Mercury gasoline engine and five gallons of gasoline.  However, raising and lowering the Torqeedo is much easier than the same operations with the 100 pound Merc.

The reasons for choosing this model were many... but one of the big considerations was that I could see where two 12-volt batteries could be placed in Snickerdoodle's cockpit fuel locker.   But, where would I put two more batteries if I went with a 48-volt motor???  Another consideration was the significant increase in price from the Cruise 2.0 to the Cruise 4.0.

The 24 volts are delivered by wiring, in a series, two Group 27 - 12-Volt deep cycle marine batteries.  I searched all over to find batteries with the highest amp hour rating.  The ones I chose were from NAPA.  These batteries are rated at 110 amp hours.  Other Group 27 batteries were rated as low as 90 amp hours.  The portside cockpit fuel locker on Snickerdoodle is just the right size for these two batteries.  And, installing them there was easy.  To keep the batteries charged, I bought a Professional Mariner ProSport battery charger rated for 12 or 24 volts.  The battery charger was on sale at the local West Marine store for $120 instead of the “normal” WM price of $150.  I installed the battery charger by securing it to the bulkhead between the big portside cockpit locker and the quarter berth.  This charger plugs into a regular 115-volt AC grounded outlet – Snickerdoodle is already wired for shore power, and I had previously installed one of those outlets near the companionway stairs.  So, mounting the charger on the quarter birth side of the bulkhead made sense to me.  The charger has separate wires for each battery which I led through a one-half inch hole in the bulkhead and another one-half inch hole that I drilled in the forward bulkhead in the fuel locker.  Whenever I plug into shore power, the charger automatically brings the Torqeedo’s batteries up to full charge.  From a nearly “used up” battery condition (the motor won’t run if the battery bank is at less than 18 volts), it takes about eight hours to fully charge the batteries.




BTW – Don’t rely on the brilliance of the West Marine staff for accurate information regarding battery chargers.  While standing and looking at the various models of battery chargers, the Inventory Manager for the local WM store approached me and asked if he could help.  I had the ProSport charger out of the box and asked how the charger could be changed from 12-volts to 24-volts.  He advised me that I would need to take the back cover off of the charger and move a “little wire” from a 12-volt post to a 24-volt post inside the charger.  This seemed odd to me… but the price was right; and I went ahead and purchased the battery charger.  Upon getting the charger home and reading the owner’s manual (you all read the manual don’t you?), I found out that the charger was programmed to automatically know whether to charge for a 12-volt or a 24-volt battery bank.  I’m sure glad that I read the manual and didn’t just start unscrewing the back of the charger.  Upon further reading I discovered that disassembling the charger voids the warranty.

95% of my motor usage is motoring from the marina to go sailing and then back to the marina after my sail is done.  The Torqeedo is perfect for this application.  My two favorite destinations for overnight “weekending” trips are three and eight nautical miles from the marina (~6-nm and ~16 nm round-trip distances).  Again, the Torqeedo’s range and speed is almost identical to the 8 hp Mercury engine that the Torqeedo replaced.  The biggest difference is with the 5% of the time when Kathy and I are on longer trips around Lake Pend Oreille.  Sandpoint, ID is approximately 28 nm from Bayview where Snickerdoodle is berthed.  Hope, ID is approximately 20 nm from Bayview.  Using a Klein multi-meter, I’ve been able to get a pretty good idea regarding how many amps per hour the Torqeedo uses at different speed settings.  This information helps me select the speed that the motor should be set at relative to the distance I’ve got to travel and the charge left in the batteries.  - - Fortunately, there is shore power available at both Sandpoint and Hope - - At 2.5 to 3.0 knots boat-speed, the battery bank will last for about eleven hours… Of course, I’d only motor that many hours if there was no wind.

I have also purchased the 10-foot long wiring harness for the Torqeedo 2.0.  With this wiring harness, I can use (if needed as a backup) the two Group 24 “house” batteries with 80 amp hours at full charge.  The 10-foot wiring harness just reaches from the motor plug to the battery box in the main cabin under the starboard settee.  I have not had to use this long wiring harness yet… but it’s there if needed – also stored in the fuel locker.

So far this year, the longest distance I’ve motored was ~25 nm.  The lake was “flat calm” the whole way.  I set the motor at about 2.9 knots (according to my Garman GPS chart plotter) and we covered the distance in eight hours with battery charge still available.  After the first two hours, the voltage indicator on the motor showed about a 0.3 volt drop hour-by-hour.  And, the voltage reading on the motor indicated 22.8 volts left in the battery bank at the end of the day.  I did find out the next day that the 22.8 is “variable” depending on engine RPMs ……  While motoring into a ten knot breeze to set sails, I needed to increase the RPMs to about where we would have had 4+ knots boat-speed in calm weather.  The voltage dropped quickly – but we still had enough to set sails…… and to get back to the slip at the end of the sail.

One of the things I’ve really enjoyed with the new Torqeedo is the learning curve that I’ve had.  AND, I’m still learning.  Next is researching solar chargers to augment the initial charge when Kathy and I decide to sail to parts of the lake where shore power is not available.  And, researching whether the Torqeedo will charge the battery bank if the boat is sailing faster than the motor “throttle” is set at.  In-other-words, if I set sails at a boat-speed of 1.5 knots and leave the motor “on” and in the water… will the propeller spin at higher revs as the boat-speed increases – changing the motor into a generator???  Will I need to install a voltage regulator in the circuit in this case???

Finally, I am truly glad that I bought the Torqeedo last spring.  It is quiet - - very quiet.  And, the motor is so smooth running that it is virtually vibration free.  There are no gas fumes to contend with.  There’s no gasoline to purchase.  I paid out a little more money than it would have cost to buy a new 10-hp Honda… but not a lot more…  Many of my sailing friends now are calling Snickerdoodle the “stealth” boat……  Some of the racers are saying that it’s an automatic penalty if they see the motor in the water during a race……… ha, ha

The biggest disadvantage is that I have a really nice 8-hp Mercury outboard engine in the garage still for sale… Anybody interested????????





Heaving To




Heaving To


          Heaving To is one of those sailing skills that many have heard about, but few have actually practiced.  It is a skill that has many benefits.  Here are just a few of the great reasons to know how to heave to:
1.     If you’re sailing single-handed, you can take a break from steering without dousing the sails.
2.    You can also fix and eat lunch, take a nap, go to the head, change clothes, etc – all with the sails still up, but the boat Hove To.
3.    Heaving To makes fixing and repairing things go quickly and easier.
4.    Reefing the mainsail single handed or short handed goes easier if you’re Hove To.
5.    You can plot your position on the chart without having the boat move significantly while you’re doing this basic navigational chore.

          So, what is Heaving To?  Simply it is adjusting the jib sail so that the jib is back-winded while the mainsail is sheeted out to about a beam reach setting.  One way to do this would be to release the loaded jib sheet while sailing and pull the jib’s clew to windward with the windward jib sheet.  This is quite a bit of work if there’s too much breeze blowing.

          An easier way to Heave To is to simply tack the boat without releasing the old loaded jib sheet.  As the boat comes through the eye of the wind, stop the boat’s turn by moving the tiller to leeward and ease the mainsheet.  As the boat comes to a stop, you’ll notice that your boat will perform sort of a “falling leaf” motion on the wind and waves with first the jib backing and pushing the bow away from the wind and then the main filling and the boat rounding up.  Adjusting the tiller or wheel to help the boat round up will complete Heaving To, and you will jog along on the waves and wind at about one knot or so with very kindly boat motion.

          Practice Heaving To on nice days with 5 to 10 knots of breeze.  Follow the six steps below.  It’ll only take a couple tries to figure everything out.  Then keep this maneuver in mind for those situations where you want to stop steering and there’s no one else who really wants to steer.