[Rhodes22-list] GPS/Depth Sounder Questions, also Anchoring and Ventilation ideas

Wed Jul 4 13:05:01 EDT 2007

Dave,

What about this for your screen - I fabricated a mount which bolts (2ea #8 pan head) onto the flat 'lip' which is on the stern edge of the sliding pop top hatch opening.  I just had to create a 90 degree surface for fastening the scope mount - not a problem at all.  When the PT is down I fix the mount in an upward direction, when PT is up, I fix the mount hanging down from the lip.  If it is in the way, I can slide the hatch forward without losing sight of the screen.  The rig can be effective for either large or small plotter face, I have used a Garmin which is clearly visible from the laz area.  It could be useful for GPS, depth readout, even radar, and without cluttering the boat.  Since the 'lip' is outside of the dry areas of the boat I have no concern about a few holes. 

I am going to try a tube, dropped off the stern, as a portable or permanant transducer mount, I'm not that confident about 'in hull' mounting yet.

I'm curious if anyone has hung a backup anchor from the pulpit in the stern area.  I am going to try, maybe with a smaller fortress model, then run the line to the bow thru my snatch block, maybe even the stern.  

Re. ventilation in hot Summer months - has anyone overnighted anchored with stern into the wind vs. the bow?  This would bring a significantly greater cross-section of air into the living area, although with greater risk of water coming into the boat.  It would create a venturi effect, with airstream thruput easily controlled by the cabin windows and/or BR curtains.  There could be an easy 'quick escape' mode if wind or chop increased beyond comfort.

Oh, what the idle mind can imagine on a lazy day.  Happy 4th of July to all Rhoadies everywhere, even in Starr, SC!

Art

-----Original Message-----
>From: David Bradley <dwbrad at gmail.com>
>Sent: Jul 4, 2007 1:49 AM
>To: The Rhodes 22 mail list <rhodes22-list at rhodes22.org>
>Subject: Re: [Rhodes22-list] GPS/Depth Sounder Questions
>
>Thanks, Lee, and all of you, for the good input.  I may try the rail-attach
>rig and move it from stern rail to Pop Top rail as I get used to viewing it
>from different positions.  I don't even like small holes in the bulkhead if
>I can avoid them.  Think I'm going to spring for the Garmin 545s.  Based on
>collective input it sounds like I can go with an in-hull transducer and
>avoid another hole, but I may have to get to that part of the project a bit
>later.  Charts should give me enough info for anchoring for now, but I do
>believe I should have the depth sounder for the long term if we're going to
>be getting into Puget Sound with any regularity...  which is a nice goal.
>My #1 priority is the chart plotter in that kind of serious water.
>
>Happy 4th to all.  Happy birthday, America.
>
>Dave B.
>
>
>On 7/3/07, KUHN, LELAND <LKUHN at cnmc.org> wrote:
>>
>> Dave,
>>
>> I agree with Mike that a depth finder is not required, but I'll never be
>> without one.  In addition to using it for anchoring, I occasionally like
>> to sail close to the shore, and many shorelines go from deep to shallow
>> water in no time at all.
>>
>> As for GPS, I've a handheld with a relatively big display.  If I prop it
>> up next to the sink, I can read it from just about anywhere in the
>> cockpit (sitting starboard requires a little leaning).  If no one is
>> sitting against the leeward side of the cabin, I prop it up on the seat.
>> Both positions require something (genoa line, sailing glove, towel,
>> etc.) to secure it during heavy wind tacks.
>>
>> Lee
>> 1986 Rhodes22  At Ease
>> Crab Alley (Kent Island, MD)
>>
>>
>>
>> -----Original Message-----
>> From: Michael D. Weisner [mailto:mweisner at ebsmed.com]
>> Sent: Monday, July 02, 2007 4:03 PM
>> To: The Rhodes 22 mail list
>> Subject: Re: [Rhodes22-list] GPS/Depth Sounder Questions
>>
>> David,
>>
>> I mounted my GPS (old Garmin unit) on the tiller handle, just behind the
>>
>> clip for the hiking stick.  It is out of the way but still close enough
>> to
>> read easily.  Prior to mounting it, I used to keep it in a mesh sack
>> hanging
>> from the stern rail, but this proved too hard to access when needed
>> (time to
>> power up and acquire).  My only problem nowadays is that I need more
>> light
>> to read these devices in darkness than the small light puts out.
>>
>> As far as depth meters, I too do not like to make holes in perfectly
>> sound
>> hulls.  I have discussed this before on the list (Nov 21, 2006) as
>> follows:
>>
>> "The R22 drafts so little that a depth finder is not required - mine was
>>
>> acquired as a gift.  It sat for 3 years waiting for me to make a hole in
>> the
>> boat for it, something that I do not like to do.  Finally, I tried
>> "shooting
>> through the hull" (no hole) in the front of the Lazarette and found that
>> it
>> was reasonably accurate.  Great toy for people to watch but virtually
>> useless on a craft that drafts 2 feet with a kick up rudder and
>> centerboard."
>>
>> If you really feel the need for a depth meter, the location that I chose
>> to
>> place the transducer was on the floor of the Laz (bottom of boat),  just
>>
>> behind the cockpit drain fitting.  You can test it in the water by just
>> placing the transducer at this point and placing a fender or suitable
>> "wedge" to put downwards pressure on the transducer and power up the
>> unit.
>> You may need to move it around to get the best placement.  Once epoxied
>> in
>> place, check the calibration by measuring actual depth and compare.
>> Mine
>> was about 3 inches off at anchor and very consistent while underway,
>> except
>> when heeled.
>>
>> Mike
>> s/v Shanghai'd Summer ('81)
>> Nissequogue River, NY
>>
>> From: "David Bradley" <dwbrad at gmail.com> Monday, July 02, 2007 3:03 PM
>> > We're getting ready for a San Juan Islands trip in August and need to
>> get
>> > set up with GPS and depth sounder.  I have two questions for the list:
>> >
>> > 1.  Has anyone had success mounting a GPS unit on a swivel arm, either
>> on
>> > the stern rail or on the transom?  I'm considering a swivel arm that
>> would
>> > stay on the stern rail and the unit could be turned to face either
>> > Captain's
>> > chair.  The unit would have to be removable with wing nuts or
>> something
>> > like
>> > that.  I've got 12V power in the cockpit through the laz, so that part
>>
>> > would
>> > be easy.
>> >
>> > 2.  Has anyone had any recent experience with the in-hull (puck-shape)
>>
>> > style
>> > of depth sounder transducer?  I have this aversion to drilling holes
>> in my
>> > boat (hence the jury rig above), and don't want to have to pull the
>> boat
>> > out
>> > of the water if that can be avoided.  I'm wondering about the
>> possibility
>> > of
>> > an in-hull transducer in the lazerette just to the side of the keel
>> area.
>> > They were skeptical at West Marine, but they don't understand the
>> flatter
>> > hull design of our boat.
>> >
>> > I have a hand-held depth sounder which I could still use if needed -
>> have
>> > never had the need and have been lucky enough not to find a bottom...
>> but
>> > that won't last.  Could also use a hand-held GPS but the display on
>> the
>> > fixed mount GPS units is sooooo much better and there is much more
>> data
>> > available.  Am thinking that I really should have a chart plotter when
>> > venturing into Puget Sound and the San Juans.
>> >
>> > Any recent experiences and perspectives will be appreciated, as
>> always.
>> >
>> > Dave B
>> > __________________________________________________
>> > Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>> >
>> >
>>
>>
>>
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>
>
>
>-- 
>David Bradley
>+1.206.225.7793
>dwbrad at gmail.com
>__________________________________________________
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