CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB

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CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
LAKE MACQUARIE YACHT CLUB
    CRUISING DIVISION

  August 2021 No. 380

      Lady Enid showing tourists Whitehaven Beach
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
Page 2                                                    LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

   Skippers Report                                              3
   Meeting notes                                                4
   In the Line of Duty                                          5
   Cruising News                                                6
   Woman Overboard                                              8
   Skill of the Month                                           9
   Solar Panels and Battery Charging                          10
   Calendar of Events                                         14
   Your stories and pics needed:
   I look forward to receiving your contributions to our Cruiseletter. Please email me
   your accounts of sailing adventures, lessons learned and technical tips so we can
   all share more fully in the adventure. I prefer documents on MSWord as they are
   easier to edit and use, but I can manage with other formats as well.
   Thanks,
   David.

Cruising Division Executive
Skipper:                           Committee
Gordon Butler   0409 509578        Geoff Edman (LMYC Rep)               Marion Cotterill       0409982535

Secretary:                         Nikki Cahill     0410 982887

Trudi Butler    0407 912825        Chris Cahill     0416 939546

Treasurer:                         Richard Masson 0422 347875

Ralph Asquith 0409 318230          Greg Barnicoat   0497 715669

Cruising Division Editor:                           Please address all letters for the Cruising Division to:

Any articles for the Cruiseletter can be sent to    LMYC CRUISING DIVISION
Cruiseletter Editor David Baker, preferably in MS   Ada Street
Word format.                                        Belmont NSW 2280
 dragonflydbl@gmail.com (0427 317109)               Alternatively, letters for the Cruising Division may be left
by 25th of each month.                              in the ‘pigeon hole’ at the LMYC office.
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
LAKE MACQUARIE YACHT CLUB CRUISING DIVISION                                             PAGE 3

Welcome to the August Cruiseletter,
Well, there is one thing we have learned about Covid, there is a need to be flexible with our
planning! My las report talked about local cruising, people cruising north, and our plans for
activities in July. All that seems a long time ago…
Our July meeting was attended by only 15 members, regardless of the relatively light re-
strictions that apply in Lake Macquarie and the meeting being planned to fit in with the
COVID requirements. Our guest speaker decided that it would be best to not attend our
meeting, quoting concerns about COVID.
Our planned Saturday activity for July was a visit to Marine Rescue, but MR canvelled the
visit, again due to COVID concerns.
We discussed the situation at the recent member’s meeting and all agreed to suspend our
activities until the COVID situation improves. It is clear that many of us are exceeding the re-
quirements of the health orders by minimizing our exposure to groups, which is a good thing.
In light of this, the Committee will monitor the situation and re-start activities when we feel
that it is appropriate. Please feel free to call me, or any other committee member, if you wish
to talk, or are concerned at all about the current situation.
Over the last couple of weeks the winter westerlies have
been making their presence felt, but a number of CD boats
have braved the conditions to enjoy time on the lake. I peri-
odically look at Marine Traffic to see if any of our members
are out enjoying the water. On Breathe, we were fortunate to
spend a couple of days in Taylor’s Bay, social distancing
with Double Diamond and Beyond Cool. The winds were
strong from the west and I am confident that Breathe won
the ‘sailing while at anchor’ event.
On another note, a number of CD members are dealing with
health challenges at present and we wish each one a full re-
covery and hope to see them on the water soon. It was
great to see CD members travel to Yamba recently to help
Greg and Sylvia return Escapades to the lake. It was a wonderful example and a testament to
the community spirit that exists within the CD.
Gordon.
Gordon Butler
Skipper
Your Cruiseletter editor is enjoying a three month road trip, so photographs,
stories and adventures emailed to me will help keep the Cruiseletter going, and
relevant to members.
Sadly, I am having difficulty finding internet with sufficient grunt to access photo-
graphs and get the Cruiseletter completed. Sorry for a sparse Cruiseletter this
month my friends.
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
PAGE 4                                                  LAKE MACQUARIE YACHT CLUB CRUISING

                   LAKE MACQUARIE YACHT CLUB CRUISING DIVISION
The July General Meeting was held on Monday 12th at LMYC and opened at 1900.
The meeting was held under very challenging circumstances and was attended by 15
members. Due to COVID restrictions masks were required and there was no raffle or sup-
per held. Many members were away cruising (we are, after all, a Cruising group) but
many others clearly felt that the recent outbreak in Sydney was a bit to close to home to
go out and mingle. Our group Skipper, Ralph, writes about this in his notes on page 3.
Our guest speaker also felt it wise to not attend, and this leaves near future guest speak-
ers uncertain as well as meetings.
In light of this, the meeting determined that it would be wise to suspend all LMYC CD
activities for the foreseeable future.
Business arising from previous meeting minutes:
Audits. A number of people are preparing their boats for audit, so we will start to see
some happening soon. Any comments from those working towards an audit? Ross
doesn’t mind doing one off audits, but can coordinate do more at LMYC. Notify audit
dates on Facebook in case anyone else is ready. Ralph doesn’t mind if anyone else
wants to observe the audit process on 2 Dream. LMYC race boats will start being audited
2 weeks prior to race season (beginning 4th Sept), so please avoid this time.
Coffee mornings – to be held on the last Friday of the month. Rob and Karen Black will
coordinate, when COVID conditions improve.
Any Other Business –
Should CD suspend activities due to COVID concerns, despite still be allowed to meet
and have activities? Discussion followed. COVID, winter.
        Decision – CD will suspend all activities for the moment, but keep reviewing as the
        situation with COVID changes.

Alternate Skipper Manual - Trudi Butler
The manual has been updated / revised. Thanks to Robert Black and Greg Barnicoat. Trudi
will place the revision document on Facebook. Please email her if you would like an
emailed copy of the revision document. Any new requests for the document will receive a
revised version.
Boat Audit program
On LMYC / CD Website you will find the audit form to download at https://lmyc.com.au/
cruising-division/ then click on CD Equipment Audit Plan (or click on this link now).
The audit plan is based on AS cat 7, but modified for the CD. Please read all 4 pages.
Satisfy yourself and check through the audit form yourself, marking off each item in the
correct place under the “P” column.
You can use the waiver request if needed. This needs to be backed up with supporting evi-
dence. A waiver request will be taken back to the audit committee.
Contact Gordon Butler to arrange an audit which will preferably be done at LMYC.
To find clauses as mentioned in the form, follow the link to Australian Sailing
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
PAGE 5                                                 LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

The planned visit to Marine Rescue Lake             However, with a gale warning still current we
Macquarie (MRLM) ops centre has been                braced ourselves for the onslaught.
postponed, but Colin Alleck has shared some
                                                    Winds may be 40% stronger came to mind.
thoughts on his early days in the LMR and the
hazards of ACRONYMS. This has been print-           Neither my training duties, studies of ropes,
ed in their excellent newsletter Tide-ings.         knots, seamanship, radio protocols nor first
                                                    aid could prepare me for the horror of a wind
In The Line of Duty                                 blown trolley heading at full speed, like a
(Memoir of a Probationary Member)                   matador's bull, towards some unsuspecting
COLINALLECK                                         shoppers.
As a probationary member of Marine                  Having observed the selfless way my watch
Rescue Lake Macquarie (MRLM) I felt                 officer grounded a table in flight, I was out of
like the proverbial deer in the                     the blocks, like Usain Bolt, in hot pursuit of
headlights as I tiptoed through a mine              the wayward shopping trolley.
field of acronyms, like SOPS, LOPS,
MROCP, MROVCP and RROCP, UC,                        The trolley was stopped in time to avert an
DUC and UC, just to mention a few.                  incident but I faced another problem, to whom
                                                    do I report this incident?
Whilst the training is necessary to handle          More acronyms swirled in my head, should I
the lingo of routine and emergency calls,           report this to
nothing mentioned above could have pre-             DUC
pared me for a Saturday morning duty I was          UC
assigned to.                                        ROM or
It was a gusty Saturday morning and                 MAC and what about the incident report
BOM, (there’s another one), had issued              form....?
a gale warning for the Hunter Coast.                These matters remain unresolved and
What was I getting into??                           perhaps the flying table should have been
With fear and trepidation I donned                  reported to CASA or DOT.
the appropriate clothing for the                    Never again will I underestimate the
weather conditions and took my place                hazardous nature of fund raising nor the
alongside my well experienced                       courageous nature of our fund raisers who,
colleagues at the raffle sales table                week after week, put body and soul on the
outside a well known Toronto                        line so we may in some small way help the
supermarket.                                        boating public.
It wasn’t long before Mother Nature
forced us to retreat from our assigned
location to take shelter alongside a
concrete column.
However, this tactic was unsuccessful
as the wind accelerated around the
column and created “lift”. The raffle
tickets were lifted from the folders,
pamphlets were lifted from the tables
and finally the raffle ticket sales table
was lifted from the ground. However,
the quick thinking action of my watch
officer saved the day when he
unselfishly stopped the escaping table
by placing his face in its direct line of flight.
With normality restored, and coffees
ordered we set our sights on the
prime objective, selling raffle tickets at
$2 each or 3 for $5.
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
PAGE 6                                                        LAKE MACQUARIE YACHT CLUB CRUISING

Many of our members continue their northern odysseys, but there are still some who are
making the most of what our Lake Macquarie has to offer and have posted lovely pics on the
club Facebook page.
While on out road trip, Tiia and I have just missed catching up with some of our cruising
members due to the challenge of timing border crossings. On our recent visits to Whitehaven
Beach, Cairns and Port Douglas we took time to ride our bicycles around the foreshores and
spy on the local boats as well as the local wildlife.

     Tiia spending time with the fish near Whitehaven

                                                        As close as you would want to be to a Cas-
                                                        sowary near Cairns.

Seen in Cairns. Some cruise this
way…

Others like this…
But we all enjoy the same scenery!
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
PAGE 7                                                 LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

                                                             Fresh prawns were all the rage in
                                                             Port Douglas.
                                                             If you want to anchor up in the river,
                                                             be sure to check the depth at the
                                                             bar. Low tide is a doozy!

    Breathe under sail, proving that some members are still cruising the lake and making the
    most of the westerlies.
CRUISING DIVISION August 2021 No. 380 - LAKE MACQUARIE YACHT CLUB
PAGE 8                                              LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

I wonder if you saw this recent post by Jenni Mack in the Sailing Australia FB page? She
has given permission to print it here in the interest of encouraging frequent practice of safety
skills at sea.
Woman Overboard! We left Sloping Island at 3am a few days ago heading through the chan-
nel to the west of Nth Keppel — I went forward to set the preventer to be able to sail our
deep downwind course safely. Suddenly, in the pitch dark at midships I found myself in the
water. I suspect the jib sheet knocked me over.
I wasn't sure if my husband knew I was overboard and shouted STOP THE BOAT! Three
times. We were in 18-20 knots of wind deep downwind and when I saw the sails luffing I
knew he was on to it (he came to midships to check me out and was relieved to see the life
jacket inflated and that I was clipped on - I was pleased to see him too).
Then, when he turned full toward the wind, the boat accelerated to about 10knots and I was
being dragged through the water with visions of the footage they show you at Sea Safety and
Survival Courses!
Once hove to, he gave me the spinnaker halyard, which was tricky to attach — its amazing
how different everything feels when you are upside down hanging off the side of the boat in
the water. He started to grind it up when it became clear that the halyard was around the
wrong side of our radar. He got me clear of the water then set up our emergency ladder and I
clambered aboard. It was warm in the water but very cold in the wind—I got changed, got on
another PFD and finished setting the preventer.
Here’s our lessons:
1.   Always turn on the deck light when going forward at night, even for those things that you
     do several times a week;
2.   Going forward on the low side always clip on short;
3.   Always watch the jib sheet on the low side, it jumps around violently downwind;
4.   Set preventer lines on both sides the day before an early start for a downwind leg;
5.   Don’t rely on technology, the AIS in the lifejacket didn't fire because when it was ser-
     viced they didn't tie the loop tight enough. We will do our own servicing from now on!
6.   Rehearse MOBs frequently as we have with instructors like Bryony Gregory and Jason
     Cummings before setting of passaging;
7.   Wake up properly before going on the foredeck in the dark;
8.   Marry well — I am very grateful that I have a safety obsessed husband and that he
     insists on regular training - as a result, while in the water I knew what was going to
     happen next and I had implicit faith he’d execute it all perfectly, as he did. Needless to
     say, my interest in safety procedures has gone up!! He had me onboard in about 8-10
     minutes.
PAGE 9                                                LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

                           Alternate Skipper - Knowledge is Power
                                      Skill of the Month
Skill 9
Sail work
Every boat is different! Learn your own boat!
Our Alternate Skipper Manual has useful information about this topic.
However, perhaps the most important skill for an Alternate Skipper to learn re sail work is
HOW TO STOP THE BOAT WHILE SAILING!
As our CD is mainly made up of couples (or singles) who sail their boat with only (one or)
two people on board, this is an important thing to know in case of an emergency. LEARN
YOUR OWN BOAT!
Spend the time to practice this skill before you need to stop the boat in an emergency.
There are many books and other information available for this topic, including our CD
copy of ‘RYA Sail Trim’.
If you would like to borrow it, contact a committee member.

                              LMYC CD Alternate Skipper Manual
                                    Updates June 2021
Title
Page 2: Add in the table
 Revision 1       June 2021      General revision of manual       R Black, G, Barnicoat,
                                 and updates in parts 2, 3, 4,    T Butler
                                 5, 7, & 11

Part 2 Instruments
Page 2; AIS
Does the vessel have AIS: yes / no?
Is AIS send and receive or send only? Change send to receive.
Page 2; AUTOPILOT
At 5 knots ………...
Add: The distance to the horizon at sea, is approximately 3.4nm.
Page 3; STEERING USING THE COMPASS
Add: To convert a true chart reading to magnetic;
If the variation is east, then deduct the variation from the chart true direction.
200 degrees true – 12.5E = 187.5 degrees magnetic
If the variation is west, then add it on. 200T + 12.5W = 212.5M

Editor’s note: On the Australian East Coast, all variation (declination) is East. See August
2020 Cruiseletter.
PAGE 10                                                         LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

Solar Panels and Battery Charging
Gregory Barnicoat, Escapades
Introduction
Solar panels have become both cheaper and lighter in the past few years. On our yachts they
can provide a cheap, regular and quiet way to charge batteries and provide electrical energy.
However, they do impact how batteries are charged.
Solar Panel Physics
Here is an alternative description of how a solar panel converts sun light to electricity.
We all use Light Emitting Diodes, LED lights today. These lights rely on the Photoelectric
effect. In this case, an electric current causes electrons in silicon diodes to emit photons
which is the basis of all light. The photoelectric effect also works in reverse. So, in a solar
panel, the silicon diodes absorb photons from certain frequencies of sunlight and pro-
duce electrons that form an electric current.
A 12 V panel is normally composed of several groups of 36 cells (diodes) connected in series.
The maximum power occurs when the cell voltage is about 0.50 V equivalent to a panel voltage
of about 18V.

Now the radiant power of the sun at midday is about 1000 W/                    and consequently solar panels
are rated at 1000 W radiation and at 25 C.
The maximum conversion efficiency for new solar panels today is in the range 18-22 %. So theo-
retically, a panel with 1 square meter of solar cells and directly facing the sun near noon time on
a clear day can produce about 200 W of power.
In practice, the panel will produce less energy averaged over a day, because
    if the panel is not directly facing the sun, the effective amount of radiation is reduced by the
         angle of the sun to the plane of the solar panel.
    The amount of air that the sunlight travels through also reduces the amount of radiation.
    Solar cell temperature.
    Panel Controller and cable losses.
    Clouds and shadows will dramatically reduce the amount of solar radiation, and of course
    Age.
Daily Total Solar Panel Energy Output
The solar panel’s total energy output will depend on the total amount of sunlight incident on the
panel. The available sunlight per day depends on the season and latitude and panel orientation.
Below is the daily total power sun energy for a horizontal panel located in Newcastle, or alter-
nately, Airlie Beach. The theoretical total solar total radiation per day is:
    Newcastle (Lat 33 S): December 11.2 kW.h/                  and June 3.3 kW.h/           .
    Airlie Beach (Lat 20 S): December 9.7 kW.h/      and June 5.0 kW.h/      .
In Newcastle, for panels on your house that are facing near north and inclined at 30° which is
near optimum, the radiant power will vary from 10.8 (Dec) to 5.4 (Jun) kW.h/                       per day. An
inclined panel increases the winter output as the sun is lower in the sky.

In this document I use Power and Energy pedantically, but many of you may not appreciate the difference. Energy is a
quantity measured in Joules, calories and Amp.hours. Power is how fast we use the energy and is measured in Watts or
horse power.
PAGE 11                                                              LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

So, we can now calculate the theoretical maximum panel energy output in Amp.hours (actually,
this the electrical charge energy).
Example. Consider a solar panel rated at 150 W with a conversion efficiency of 20% at 25 C
charging a 12V battery at 14.2 V, lying horizontally with zero shadowing. The solar panel’s total
cell area is 0.15 kW/0.20 = 0.75                 since it is rated at 1000 W of radiation.
        Note: that the total panel area will be somewhat larger.
Then the maximum available energy to charge a battery per day is
        11,200 x 0.75 x 20%/14.2 = 118 A.h in Dec. and 35 A.h in June.
Energy is normally measured in Joules (Watt.second), Watt.hours or kilowatt.hours. But since a
charged battery has a near constant voltage, it is common to quote the capacity and hence ener-
gy in Amp.hours (A.h). The total energy in A.h is calculated by dividing the W.h by the appropri-
ate (battery) voltage. When charging a lead acid battery, the voltage would be about 14.2 V.
        Note: This does not include various energy losses which are considered in next section.
It should be noted that a solar panel produces a near constant current, but the panel voltage var-
ies with the power output. A 12 V panel will provide maximum power when the panel voltage is
about 18V. Thus a 150 W panel will provide a maximum charging current of 150/18 = 8.3 A. This
can be verified by measuring the short circuit current, which would be about 8.5 A. Yes, you can
short circuit the solar panel output cables without damaging it, and this is a good way to
test a panel by measuring the short circuit current.
Summarising, in December the solar panel will charge for effectively 11 hours, and in June effectively 4
hours.
Solar Panel Temperature
The solar panel temperature can get very hot, perhaps 60 C on hot summer day with no wind. A
solar panel efficiency decreases with temperature. Some manufactures quote the temperature
coefficient of the maximum power. A typical value is -0.45% for every degree above 25 C. Typi-
cally a panel will have a temperature about 20 C above ambient. Therefore, the typical loss of the
maximum output power is about 10%. So, a 150 W panel will in practice provide only maximum
output of 135 W. Also, the solar controller and cabling will further reduce the output power by
about another 10%. See next section.
Solar Panels on Yachts
Power: For nearly all yachts fit as much wattage as is conveniently possible
Guidelines. Partial shading on the panel will drastically reduce the output power. This is be-
cause a 12 V panel is composed of 36 cells (diodes) in series (string). Consider a cell with no so-
lar flux, so it produces no current AND it also blocks the other cells in the same string. Thus, the
current output from that string is essentially zero.
Panels are often placed on Biminis, coach roof or special a built arch to avoid shading.
On many yachts the use of two solar panel controllers one for starboard and one for port may be
warranted. When possible, off-set the boom so as to minimize the shading affect. Stays will pro-
duce a diffuse shadow and will not affect the panel performance as much as a full shadow across
a part of the panel.

2
 For a 12V composite lithium battery, the energy values quoted will be nearly the same.
3
 Amp.hour is strictly the amount of electrical charge energy. But in a battery where the voltage is nearly constant ( e.g lead
acid battery 12.5 V), it is usually quoted as a measure of battery capacity.
4
 Constant current devices: Most of you will be aware of constant voltage devices like a battery- the voltage is nearly constant
under most loading and charging conditions- excepting when short circuited. A solar panel is a constant current device. It pro-
duces a near constant current for normal loading, excepting when open circuit.
PAGE 12                                                             LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

Thin flexible solar panels come on either plastic or aluminum bases. They are light less than
4kg/    and thus do not require special built structure. They can be screwed, glued or attached
by Velcro to existing yacht fixtures. Newer panels are coated with a plastic compound
(abbreviated ETFE) for environmental protection.
An aluminium-based panel gets very hot, so it should be mounted at least 1 cm above a fiber-
glass hard top or insulated from canvas.
Plastic based panels will not transfer significant heat to the mounting surface and can be glued,
sewn or Velcro-ed directly onto canvas.
Panel advertised specifications- are often unrealistic

Here are three examples of panel advertisements each with an area of 0.67                              .

Renogy 100 W panel is 1.22x0.55 m (0.67      ) weight 1.8kg. Claims 21% efficiency. Optimum
operating condition for maximum power is 18.9 V at 5.29 A. Note, the short circuit current is 5.75
A. The total area of the panel is 0.75              . Price $179 plus freight. Dollars per Watt is $1.79.
Ebay Claimed maximum power 300 W, at 19.7 V and Kyocera cells. Panel size is 1.01 x 0.67 m
and 2.5kg. The maximum “likely” output from 0.67                      is 1000 x 20% X 0.676 x 90% = 120 W!?
Price $154 delivered. Dollars per Watt, $1.28.
Ebay same seller as above! Claimed power 150W at 19.8 V at 7.82 A and Kyocera cells. Panel
size is 0.995 x 0.67 m. Assuming a cell coverage of 95%, then panel efficiency is calculated as
150/640 = 23.4% which is possible but unlikely.
It should be noted that many Ebay panels quote unrealistic power output. So, buy brand panels
from reputable dealers.
Solar Panel Controllers
The purpose of the solar panel controller is to match the electrical characteristic of the panel to
the panel’s load. In our yachts the controller will be connected directly to the batteries. Control-
lers are now very smart incorporating a switching mode voltage regulator, a micro-controller, con-
trols and a display. Some also have WIFI and/or Bluetooth for remote control.
Most 12 V panels will deliver the maximum power output when the panel voltage is about 18 V.
But most of our yachts use a 12 V battery system. The controller’s voltage regulator is able to ad-
just the panel’s output voltage for maximum battery charge current. The controller’s voltage regu-
lator is able to adjust the panel’s output voltage for maximum battery charge current. The control-
ler allows you to select the
battery type such as AGM, Lithium, etc. Many new controllers also incorporate battery manage-
ment functions, such as bulk, float and equalization programs.
Maximum Power Point Tracker (MPPT): These controllers are able to track the output power
from the panel by adjusting the panel’s output voltage for maximum power. The controller will
compensate for effects such as lower solar radiation, panel temperature and other affects.
Advice
My advice is to purchase brand named intelligent MPPT controller. One controller should be
used for each bank of panels such that the solar radiation can be maximized over a day. On Es-
capades, I have four panels on my Bimini and the panels are arranged as two starboard and two
port panels each in parallel. On the mooring, I also offset the boom so as to minimize the effect
of the boom shadow on the panels.
5
 Switching mode voltage regulators typically use a MOSFET transistors and will operate with an efficiency approaching 90%
and with low stand-by power levels.
PAGE 13                                                    LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

Electrical Cabling
Panels are typically provided with MC4 connectors and there are many standard cable combina-
tions to parallel and feed the power to the controller. Use a good water proof gland to feed the
cables through the bulk head. There are many suppliers of solar panel components.
Each panel group should be fused. I have also incorporated a battery selection switch (OFF, 1,
BOTH, 2) that is used to select how the controllers are connected to the battery.
The controller should be mounted as per manufacturer’s instructions.
Energy use in boats
Here are some observations about items using energy in your boat.
Normally the largest user of energy will be the Frig/freezer especially in the summer.
Many of us have electric powered autopilots. In seas greater than about a meter, I expect that
the AP uses quite a lot of energy. It is difficult to quantify.
Other large users are microwaves, old radars, induction cook tops and increasingly navigation
aids and charging our phones, tablets, PCs , video equipment and drones.
Summary
Solar panel can provide significant energy during summer months but it is reduced three times in
the winter. Horizontal panels place so as to minimize shadowing is the best choice combined
with MPPT controllers.
Looking towards the future, I can imagine a 2050 cruising yacht with zero CO2 emission with
sails composed of solar cells, charging lithium batteries and with an electric auxiliary motor.
Perhaps the future for Sydney- Hobart races!

   References
      https://www.pveducation.org/pvcdrom/welcome-to-pvcdrom
PAGE 14                                                LAKE MACQUARIE YACHT CLUB CRUISING DIVISION

LMYC CD Calendar of Events – 2021 (second half of 2021)
NB: All General Meetings are held in the Marquee at LMYC, beginning at 7pm. Committee meet-
ing are currently being held in the Bridgedeck room, starting at 4 pm. On water activities will gen-
erally start on the Friday and finish on the Sunday or Monday. Coffee mornings are not being held
at the moment due to COVID restrictions.

The following planned events are on hold until there is a satisfactory change in the COVID
situation. Stay tuned for changes.

     Date                  Event                                    Comment
     2021
14 June                General Meeting         Guest Speaker: Chris Cahill: Modernisation of out-of-
                                               date electronics.
18 - 19 June      Float Your Boat/On water     Dress up your boat (LMCC). Co-ordinator - TBA
                           activity
28 June              Committee Meeting
12 July                General Meeting         Guest Speaker: Modern Communications -
                                               Peter Davidson (EPIRBHIRE)
17 July                  Visit to MRLM         Location: MRLM. Coordinator – Gail McBurnie
26 July               Committee Meeting
9 August               General Meeting         Guest Speaker: North Sails
13 -15 August             Safety Day           LMYC: Co-ordinator - Chris Cahill
30 August             Committee Meeting
4 September         LMYC Sailing Season        Sail Past
                         Opening
13 September          General Meeting          Guest Speaker: TBA
17-19 Sept             On water activity       Co-ordinator: TBA

27 September          Committee Meeting
10-22 October        Cruise Down South         Coordinator: TBC
11 October             General Meeting         Guest Speaker: TBA
15-23 October          Ivan Irwin Cruise       Location: Lake Mac, Theme: TBA
25 October            Committee Meeting
8 November             General Meeting         Guest Speaker: TBA
12-14 Nov              On water activity       Location: Lake. Theme: TBA

29 November           Committee Meeting
13 December            Christmas Party         LMYC Marquee – Starts at 1800 hrs.
31 December         New Year’s Eve Cruise      Location: TBA
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