March 2020 - Bob Mc Davitt 's Weather Corner Calendar sponsor - Cater Marine TrailBlazer takes out the Cup! NEW - Trade Directory Marina Update ...
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PL FRSE TA EA E E KE O ! N E Bob Mc Davitt’s Weather Corner Calendar sponsor - Cater Marine TrailBlazer takes out the Cup! NEW - Trade Directory Marina Update Monthly Quiz Handicaps March 2020
2 | Tell Tales IN THIS ISSUE... On the cover: ‘TrailBlazer‘ in winning form at the Javelin Nationals in wellington in February. Photo - Commodore’s Report...........................3 Courtesy of David Brown Who is Jo?...........................................4 Advertise in Tell Tales Nautical Quiz.......................................5 ...and be seen by hundreds of people in Opua and Marina Update....................................6 Paihia every month Whats on & Racing News....................7 1 year - $300 ($25 per advert) Handicaps.........................................8-9 6 months - $150 Bob Mc Davitt...........................10,11,12 3 months - $100 Calendar Sponsor - Cater Marine.........13 1 month - $50 Trade Directory...............................14-15 Call Sheila on 09 402 6924 or email info@opuacruisingclub.co.nz Full March Calendar............................16 WOW Weekend Women on Water Bay of Islands Fun Sailing Rally Friday 1st May – Sunday 3rd May 2020 Women sailors of all abilities are invited to join us for the third Women on Water Fun Sailing Rally. A WOW weekend to develop your sailing skills, meet new friends, have fun! • Bring your own boat or use one of ours, organise your own crew or join a crew. Costs1 Great Escape § Join a crew $150 for the weekend, (Great boats, participants allocated to crews in consideration of experience etc). § Plus bring snacks, something to share Saturday afternoon and your own refreshments. SCHEDULE OF EVENTS 1. Friday 1700 meet at Opua Cruising Club; introductions, crew / boat allocations (if required), fun sailing theory, review of forecast, passage planning for the weekend. 2. Saturday morning cast off, head to agreed destination, shared late lunch /early dinner ashore. Potential afternoon sail to the overnight anchorage. 3. Sunday morning meet ashore, plan the course to sail home, lunch stop. Approximately 1700 return to Opua and optional debrief at Opua Cruising Club. Emphasis is on fun and participation, sharing ideas and expertise. All elements subject to weather. Contact info@greatescape.co.nz Ph (09) 402 7143 https://www.facebook.com/GreatEscapeSailingBayofIslands/ ***Fun prizes!*** 1 Costs include provisions for breakfast and lunch Sunday. All other meals and any refreshments are at participant cost. Other than time at OCC all BYO. Bring your own boat and crew - $50 entry
Tell Tales | 3 COMMODORE’S REPORT Chris Williams Hi All - Welcome back as another month has flown by. We have a massive month ahead packed with racing and events. Please check the calendar or website for more details and in this edition we have a segment on handicapping , how it works and why so please have a read through as it explains the automated system we have. We are planning a St Patrick’s Day party, Tuesday the 17th of march. There will be green drinks and some prizes for anyone that turns up in costume. Check out out Tuesday night email and facebook for updates. We had one of the largest attendances to our February bbq cruise in Entico bay , it was great so see so many new faces there. The next weekend bbq cruise is on the 14th 15th March location to be decided and will be up on our facebook page on the 13/14th. Please remember all are welcome so come along and meet the crew have a beer (or 3). Recently a couple of our members competed in Wellington for the Kingham Trophy and Sanders cup with fantastic results. There are more details further through the Tell Tales but a great result from Antje and Fi with a second and third with David Brown taking out both events in the Javelins. On other racing news Chris and Rebecca Hornell are currently competing in the round north island 2 handed race. At the time of writing this article they have completed leg one with a very close second on the line and are currently leading the fleet north towards Cape Reinga on leg 2 of 4 that takes them all the way down the west coast to Wellington. Keep up to date with their progress on either the Kia Kaha facebook page or on yb tracking app search ssanz round north island 2020 .Good luck team Hornell. We have a couple of new committee members/volunteers taking the reins on the social side of the club Jo will be looking after the weekly events ie quiz nights etc and Sue Dunlop-Christie will be taking over as chief club function coordinator so please if you have any ideas or are willing to help Jo and Sue out please get in touch. We had some work done on the club dock by a motley bunch of club members and managed to repair the broken boards on the seaward side, a perceived small job turned out to be somewhat of an all day affair but a huge shout out to all those that helped out and especially Andy Newton, without you mate we would still be down there bat- tling. Thanks Chris Williams SPOT THE YOT - LET US KNOW WHAT YOU THINK OF TELLTALES AND WIN! Well done Kevin Glover this month’s winner, who spotted the ‘yot’ in the Marine electrics ad last month - Call into Burnsco and collect your prize from Nick. Another 20 litre dry bag is up for grabs this month. All you have to do is email info@opuacruisingclub.co.nz or phone the office on 09 402 6924 Let us know whose advert you have found the little yacht in as well as what you like best about our monthly newsletter before March 24th to go in the draw to win. We really apprecite the feedback, it lets us know what you value about the information we include in TellTales every month. The winner will be announced in the April issue.
4 | Tell Tales Editors Note Hi Everyone, This month we are changing up the layout up a bit. After all the great feedback we’ve had recently through the ‘Spot the Yot’ competition - remember you have to let us know what you like about TellTales as well as which of our sponsors ads you found the little ‘yot’ in, and an increase in local businesses wanting to advertise with us. We will now be collecting all the ads, as well as the monthly ‘Advertorial’ on our Calendar sponsor for the month in a new place - the TRADE DIRECTORY at the back of the Magazine. It’s going to be easier for you to find the services and trades you require, they will all be in one place - the only place to search when looking for locals to help you out:- Sailmakers, Upholstery, Marine Electricians, Rigging Experts, Home Building & Maintainance, Safety at Sea, Holiday Planning, Boat Builders, Boat Brokers, Mechanics, Chandlers, Moorings, and General Yacht Services - It’s all there! Don’t forget if you are a local business owner, people are using us more and more as a reference to find trades & services. Not only boat related. Chur, Kerry. Oh, and don’t be a dick by washing your boat off from your tanks then filling your tanks up at the marina! NOT A YOTTIE Hello, I’m a newbie on the scene in this northern paradise known as The Bay of Islands, named by Captain James Cook in 1769. I’m not a ‘boaty’ or a ‘yachty’ so I fill my days with other adventures, and thought I’d share some of them with Tell Tales each month. I’m on my own now and been living in Opua for about 18 months. It was in the middle of winter when I came here to live and I didn’t know many people but in the “What’s On” column in the local paper there was a phone number for Indoor Bowls, I thought ‘I can do that’. I joined the Opua Indoor Bowling Club straight away and started my adventure with a group of people who admitted me with open arms, so warm and friendly. Every Monday evening in the winter we’d gather at the Opua village hall for a couple of hours bowling plus a cuppa and biccies afterwards, and at least once a month we’d have visitors from other local clubs or visit their venues for competitions. Summer arrived and no more indoor bowls, so I joined the outdoor bowling club in Waitangi, and what a surprise that was after playing short mat bowls on a 22 x 6 feet mat and then seeing the length of a natural green used for lawn bowls it was a bit of a shock. It looked immense and the bowls are lot heavier as well. However I persevered, I’m getting better at lawn bowls and once again, the club members are great. One thing led to another and before I knew it I had been invited to learn Mahjong and found that members from both of the bowling clubs were there. What an adventure that has turned out to be! It really is a very complicated game but I’m slowly getting my head around it. All of this beautiful summer weather hasn’t stopped the fruit coming in and there’s an abundance of peaches, pears, passion fruit and figs and friends have been very generous with their produce. We had some rain today, not enough to end the drought but it was very refreshing. That’s all for now, but there’ll be more news in next months Tell Tales. From Jojomo Jo is now helping out on the Committee with the Weekly Social Events, Ed.
Tell Tales | 5 Nautical Nowledge QUIZ #17 Test your crew!! Test yourself with these five quick questions. 1. What are the two types of bilge pumps? a. Electric and hydraulic b. Electric and bulb c. Electric and manual d. Electric and semi-hydraulic 2. The angle between a yachts’ centreline and the direction of true North is known as… a. Compass course b. True course c. Magnetic course d. Direct course 3. When two power driven vessels are meeting head on, both are required to alter course to port a. True b. False 4. The size and daily bag limit for snapper in Northland is a. 27 cm minimum size and 10 per fisher b. 30 cm minimum size and 7 per fisher c. 35 cm minimum size and 5 per fisher d. 30 cm minimum size and 10 per fisher 5. Which cardinal mark is this? Where is the safe water? Where is it located? a. East Cardinal Marker, safe water to the West, outside Otehei Bay. b. East Cardinal Marker, safe water to the East, outside Omikiwi Cove. c. West Cardinal Marker, safe water to the West, outside Omikiwi Cove. d. West Cardinal Marker, safe water to the West, outside Otehei Bay. If you struggled with any of the questions or you want to expand your knowledge of sailing theory take the free eLearning courses at International Yacht Training. https://www.iytworld.com/courses/course-types/elearning/ Answers on page 9
6 | Tell Tales MARINA UPDATE Marina Update – February 2020 Paul Stringer FNHL What a fantastic summer we have been having here in the Bay of Islands, the boatyard was incredibly busy leading up to the Christmas break and it has been great to see so many local and visiting boats out enjoying our islands. The 2020 edition of the Bay of Islands Sailing Week was another incredibly successful event with the organisers attracting a record number of boats. With some creative berthing arrangements, we managed to accommodate all the yachts in the marina including rafting up 5 Young 88’s alongside in a catamaran berth. The recently completed Opua Wharf Pontoon has begun to attract attention, with a number of visiting superyachts choosing to use Opua as a base for their BOI cruising program this summer. We already have solid bookings for next summer and look forward to welcoming a record number of large yachts to the region in the leadup to the Americas Cup 2021. As most of you will be aware, the Far North District Council has declared level 4 water restrictions in the Opua area, these restrictions will remain in place until we get enough rainfall to top up local water supplies. These restrictions do impact both marina and boatyard users and we ask that everyone respects the restrictions and assist us to conserve water and report any leaks. ESSENTIAL LEVEL USE ONLY 4 Full Water Restrictions are in place. You may: Use water for drinking and cooking Use water to wash clothes and take showers You may not: Use water anywhere outside We have managed to secure a non-potable water source that we are trucking in to enable us to continue to waterblast boats as they haul out in the boatyard. Many of our visiting offshore cruisers have also been enjoying the wonderful cruising weather around New Zealand and are now starting to prepare for the next leg of their offshore voyage. We have plenty of haul out booked over the next few months and the local marine service providers are also reporting good bookings. If anyone has any queries with anything that is happening (or not) in the marina please do not hesitate to send me an email paul@boimarina.co.nz or contact me through the marina office and I will endeavour to get you an answer.
Tell Tales | 7 March Bingo with Jo on Thursday 5th Darts on Thursday 12th & 26th St Patricks Day Tuesday 17th - Come and join us to celebrate all things Irish: Food. Music Tall stories, Drink Diddle de Dee. Dress up to win prizes and come on down for some Irish fun. Quiz night - Thursday 19th - 1930 start. come with a team or join one on the night. Be prepared for questions on all sorts from your Quizmaster. BBQ Cruise Saturday 14th & Sunday 15th- keep an eye on our Facebook page to see where we’re going. (Weather permitting) RACING NEWS Antje Muller David Brown has won the Sanders Cup and Kingham Trophy in Wellington. Although he was sailing for Manawatu because that is his residence, he is representing the OCC Fi and I came second in the Kingham Trophy race and third in the Sanders Cup. Javelin 2020 Nationals Boat Helm Crew Sail # Club R1 R2 R3 R4 R5 R6 R7 R8 R9 Total Net Place Trailblazer David Brown David Feek 524 Opua Cruising Club 1 2 4 1 3 1 2 2 1 17 10 1 Hot Gossip Dylan Doug Alex Koukourakis 305 Tauranga Yacht and Power Boat Club 3 1 2 2 1 3 5 3 2 22 14 2 Riders on the Storm Ross Shanks Colin Shanks 380 Gisborne Sailing Club 4 3 1 4 2 4 3 1 3 25 17 3 Insidious Fix Peter Precey Jake 525 Lake Pupuke Yacht Club 6 4 3 2 4 2 4 6 4 35 23 4 OA Antje Muller Fi Charman 521 Opua Cruising Club 2 5 5 5 8 8 1 4 6 44 28 5 Black Bart Kez Cameron Tim Sherry 318 Tauranga Yacht and Power Boat Club 5 6 6 6 5 5 7 5 5 50 37 6 Nigh Nurse Oscar Kirkham Ben Hambling 354 Opua Cruising Club 7 7 8 8 8 8 6 7 7 66 50 7
8 | Tell Tales Hey OCC Race Guy For goodness sake, why are you putting my handicap up all the time? It's so high now I have vertigo. Not a great sensation and feels like you are shaking salt in to my wounds. I am feeling frantic, as I am hotly pursuing a win in the series and your handicapping is like a jigsaw puzzle. Yours truly Unhappy One Dear Unhappy One I see you are aware of Rule No 1 “it’s always the Race Guy’s fault”. He’s a bit sick of that rule, so the Race Guy has asked me to introduce myself. My name is Hewlett Packard Pro Book 450 Laptop. Just call me HP Laptop for short. My family name comes from America, but I was born in Shanghai China. However, I am a keen Royalist. Her Majesty, who is a keen racing person, had the Royal Yachting Association formulate the RYA NHC automated handicap system. One of my UK relations managed to get me a copy at great risk to himself and resulted in a Corgi severely chewing his power lead. I use this software to produce the results and the updated handicaps. So how does the RYA specification work? Well if you do well - your handicap goes up. If you do badly -your handicap goes down. If you do fairly average - it pretty much stays the same. If you don’t race - it stays the same. If you DNF - nothing changes. If less than 3 boats - nothing changes. Anything out of whack - then 3 races should sort it. So you want to know more? Well here it is from the Royal Yachting Association team: Calculating race results The approved software’s will calculate results for any race as follows: C = E x NHC# Where; C = The corrected time to the nearest second E = The elapsed time to the nearest second (where a boat finished/ took part in a race and has an elapsed time) NHC# = The handicap number used in that race expressed as a Time Correction Factor (TCF) An example is shown in the table below. Boat NHC Handicap Corrected Name Elapsed Time (E ) number time Position Points Boat 4 3448 0.964 3324 1 1 Boat 3 3548 0.939 3332 2 2 Boat 1 3527 0.966 3407 3 3 Boat 2 4610 0.819 3776 4 4 Boat 5 0 0.983 0 DNC 6 [NB unless specified, the Racing Rules Appendix A is applied for other scoring issues such as DNC, Times may be in either seconds (as above) or in [hh:mm:ss] Adjusting handicaps The adjustment calculations for a series use known principles. For every race that a boat completes an achieved handicap is calculated. This achieved handicap is the handicap that if rescored, all boats would score equal 1st. A percentage of this achieved handicap is then applied to a boats current handicap to give the handicap to be used for the next race. If a boat has not taken part in a specific race, it will receive no adjustment and it will carry forward its current handicap to the next race. The achieved handicap for each boat in a race is calculated as follows: The sum of the Handicaps used by all the boats that took part in the race divided by the sum of the adjustment scales from boats that took part in the race, multiplied by the individual adjustment scales of boats that took part in the race. The adjustment scale for each boat is calculated as 100 divided by the elapsed time. Expressed mathematically as: TCFr=(ΣTCF/ΣAS)xAS Where: TCFr = Achieved handicap TCF=Handicap used and AS = Adjustment scale (100/E) E= Elapsed Time
Tell Tales | 9 The achieved handicap is then compared to the handicap that was used for that race to establish if the boat over or under achieved their handicap. The handicap to be used in the next race is then calculated by adding a percentage of the achieved handicap and a percentage of the used handicap together to make up the handicap for the next race. This is slightly different dependant for under or over performance. It is expressed mathematically as: For over performance; TCFn = (TCF x 0.7) + (TCFr x 0.3) For under performance; TCFn = (TCF x 0.85) + (TCFr x 0.15) Where: TCFn = The Handicap to be used in the next race TCF = The Handicap used in the race being analysed TCFr = The Achieved Handicap in the race being analysed An example is shown below: Boat Adjustment Name Elapsed Time (E ) NHC Handicap number Scale TCFr Boat 4 3448 0.964 0.02900232 0.997 Boat 3 3548 0.939 0.028184893 0.969 Boat 1 3527 0.966 0.028352708 0.975 Boat 2 4610 0.819 0.021691974 0.746 Boat 5 0 0.983 0 0 Sum of Sum of Adjustment TCF 3.688 Scale 0.107231895 [Individual race analysis] Boat NHC Handicap Name Elapsed Time (E ) number TCFr TCFn Boat 4 3448 0.964 0.997 0.974 Boat 3 3548 0.939 0.969 0.948 Boat 1 3527 0.966 0.975 0.969 Boat 2 4610 0.819 0.746 0.808 Boat 5 0 0.983 0 0.983 [Calculation of handicaps to be used in the next race] Q: Will boats be able to deliberately sail badly for the first part of a season so that they get a handicap that allows them to easily win the second part of the season? A: As NHC is a performance handicap system the handicaps are adjusted after every race, based on the boats last race performance. If a boat decides to deliberately sail badly its handicap will gradually reduce. A boat would need to grossly underperform for a prolonged period of the season in order to guarantee wins later in the season. When such a boat starts to perform to her true potential her handicap will go back up making it hard to “sand bag” her results in a manner that will allow her to win a series/ season of races. Note also that the system is designed such that handicaps increase faster after good performances than they fall after poor performances. Every boat will have to continually sail to her true potential in order to win a series of races. So that’s straightforward isn’t it? My mate Google from America has a saying “you don’t need to know how a combustion engine works to drive a car.” He also reckons in a few years Google and I will be driving your car and not you. Perhaps Google should be skippering your yacht. Cheers and happy racing HP Laptop PS If you are still unhappy, I will turn my microphone on and you are welcome to tell my screen all about it in the race box. Just leave the long suffering Race ANSWERS TO inQUIZ Guy to have his beer peace. 1.C. Electric and manual 2. B. True course 3. B. False 4. B. 30 cm minimum size and 7 per fisher (*SNA 1) 5. D. West Cardinal Marker, safe water to the West, outside Otehei Bay.
10 | Tell Tales THE MJO ‘MetBob’ McDavitt When I was a weather forecaster in Fiji back in the 1970s we would draw the isobars and streamlines by hand. As part of this process we would look at a weather map for 12 hours ago and write down the air pressure change for each observing station, blue for positive and red for negative. The idea was for us to quickly identify regions of falling pressure, as these often end up in squalls and maybe in developing cyclones. I used to import special “auditor” pencils that where blue at one end and red at the other to help me with this task. In those days the only place I could find with these pencils available was the old Printing and Book shop at Ferguson and Osborn’s in Lambton Quay, Wellington. Imagine my surprise when I started to notice that I was using mainly either the red end or the blue end of the pencil for a few weeks at a stretch. The pressures would slowly fall over much of the South Pacific for a few weeks then slowly rise for a few weeks, and this pattern would drift eastwards. I had stumbled onto some kind of pattern, and this intrigued me to look at the cloud imagery as seen by some early meteorological satellites. I drew maps, each averaged over 10 days showing the % of cloudiness over the South Pacific in 10% divisions. I did this for a month and then reviewed the maps. Sure enough, merged in with the South Pacific convergence zone, a zone of increased convection moved east across the South Pacific for a week or more, followed by a zone of decreased cloudiness, and then this pattern repeated. I had stumbled upon what is now called the MJO or Madden-Julian Oscillation. This was discovered by Dr. Roland Madden and Dr. Paul Julian of the American National Centre for Atmospheric Research (NCAR) when they were studying tropical wind and pressure patterns. This was published in 1972 in the Journal of Atmospheric Science (Volume 29, pages 1109-1123.)
Tell Tales | 11 BOB MCDAVITT’S WEATHER CORNER So the MJO is characterised by a wet period followed by a dry period and each orbit eastwards around the globe lasts around 30-60 days and takes a week of two to cross each region. Each new MJO seem s to start just east of Africa, travel east, and fade when it gets east of the dateline, so doesn’t affect South America. . For scientific analysis purpose each orbit of the MJO is divided into 8 phases or regions, with Phase 1 measuring signals from a fading MJO in the east pacific and the starting of a new MJO just east of Africa. Our region is Phase 6 and 7. You can see up-to-date Phase diagrams labelled as 200-hp velocity Potential forecast or RMM1 RMM2 forecast at www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/forca.shtml But I prefer something easier to view, related to cloudiness. The Outgoing longwave radiation OLR is that part of the solar radiation that is reflected by the earth back out to space. It is low when the atmosphere is full of thick cloud (Blue= bubbly) or high when the sky is relatively clear (yellow/red = mellow). An up-to-date OLR series of maps can be seen at www.cpc.ncep.noaa.gov/products/precip/CWlink/MJO/forca.shtml (scroll down past the Phase diagram).
12 | Tell Tales OMG IT’S THE MJO! ‘MetBob’ McDavitt Low OLR (blue areas) can be taken as high-risk areas for Cyclone formation, so the above map shows a likely cyclone (or two) in the South Pacific area from now to-29 February. Bob McDavitt for Tell Tales Bob McDavitt is the weather guru that uses /\/\ etBoB to provide weather information for cruising sailors, primarily for those in the South Pacific.
Tell Tales | 13 CALENDAR SPONSOR - CATER MARINE 0800 228376 ARE YOU BUILDING A BOAT, OR JUST DOING SOME MAINTENANCE? Do you need to replace a door latch, or redo all the wiring and plumbing aboard? Are you planning a fishing trip or a holiday with the family? At Cater Marine, we stock a wide selection of products for leisure and commercial yachts and launches from Anchors to Zincs and everything in between. We also offer dive refills. We’ll match their price and throw in a little thing called service!
14 | Tell Tales TRADE DIRECTORY Please support our sponsors Without the kind support of all our advertisers and sponsors, the OCC simply wouldn’t be able to produce this magazine. So, please show your support in return, use the products and services advertised in Tell Tales whenever possible. Make sure you tell them you found them here OPUA 2012 WE SPECIALISE IN: Batteries Solar panels LED lighting Stockists of Pratley Adhesives Marine installation & repairs Unit 6, Opua Marine Park, Baffin St, Opua Tel/Fax: 09 402 7177 www.marineelectricsopua.co.nz OPUA B OAT BUIL DE RS LT D ALTERATIONS REPAIRS TEAK DECKS WOODWORK FIBREGLASS P 021 236 1721 E opuaboatbuilders@gmail.com Unit 1, 15 Baffin Street, Opua Marine Park
Tell Tales | 15 SHIVER ME TIMBERS .. at Bay of Islands ITM we KNOW THE ROPES to make all your building projects PLAIN SAILING “We’ll see you right” • New Racing & Cruising Sails • Repairs, Recuts & Alterations 4 Norfolk Place, Kerikeri T: 09 407 8153 M: 021 786 080 W: www.willissails.co.nz • E: info@willissails.co.nz
Monday Tuesday Wednesday March 2020 Thursday Friday Saturday Sunday 1 15:00 RBC Single Handed Race 2 of 3 2 3 Total Yacht 4 5 Kiwi Sheds 6 7 8 13:00 Care Twilight I Rum Race 10 Seapower 2 Handed Series Race 8 Race 6 9 10 Total Yacht 11 12 13 Overnight BBQ 14 Overnight BBQ 15 Care Twilight NSR Twilight Series cruise cruise Series Race 9 Race 5 15:00 RBC Womens Race 2 of 3 16 Committee 17 18 19 20 21 12:00 RBC 22 Total Yacht Kiwi Sheds Meeting Care Twilight I Rum Race 11 W/End Race 5 Series Race 10 Dave Henderson Memorial Trophy St Patricks Day 23 24 25 26 27 28 F&P 29 Total Yacht Care Twilight NSR Twilight Series Interclub Race 3 Series Race 11 Race 6 OCC Start 30 31 16 | Tell Tales For latest calendar updates see www.opuacruisingclub.co.nz/events
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