Showing posts with label Sailing. Show all posts
Showing posts with label Sailing. Show all posts

Thursday, 15 April 2010

How to Plane

So I have been going on about planing recently and have found the following top tips which we'll be putting into effect in the next race..... planing can happen in a suitably designed boat in moderate to strong winds if the crew do some or all of the following:
  • Sail on a reach or broad reach to begin
  • Slacken the jib
  • Raise the centreboard
  • Increase the speed
  • Keep the hull level, trapeze if necessary
  • Observe the wake until it is smooth and fast.
  • Move the crew weight increasingly towards the rear to begin and to sustain planing
  • Sheet in as speed increases, and apparent wind correspondingly moves forward.
  • Keep the boat flat and level
  • Bear away to maintain speed as necessary
  • Flick or pump the sails (although there are restrictions on doing this in a race)
While planing, it is important to steer through the waves, avoiding any collision with the wave in front. Also, in dinghies, keep good control of the sail power. A small change in wind direction can easily cause a capsize or gybes. Boat control becomes easier as planing begins, but fast reactions are often needed to get there, to keep the speed up and to keep the boat level. Crew balance and trim are vital, as are sail trimming and minimal centreboard.

Thursday, 15 October 2009

Video of Topper Xenon

At last a Topper Xenon video! You would have thought Topper would have promoted a few more of these. Anyhow here are some chaps in New Zealand sailing a Topper Xenon. They don’t know how lucky they are not having to negotiate mud banks and deal with tidal flows. It looks like they have awesome conditions down there - my only comment is – keep the boat flat! (but hey I’m in my study with a glass of wine…)

Sunday, 11 October 2009

Topper Topaz and Safety Boat

This weekend I was doing my bit for the Sailing Club and was helping out with the safety boat and the Club’s cadets.

We had 2 of the safety boats out, a Rib with a 50hp motor on and something called a Viking which looks to me like it was once a fishing boat or a very large tender; it gives us that stable base and a platform we can anchor on the river (Colne).

I probably found the cadets more amusing than any sailing I did on the day. There is a real mix of girls, boys, those that can, can’t sail, will continue to progress and will become, given the chance, very good sailors. Half way through the afternoon, I transferred from the safety boat to sailing one of the cadets on a Topper Topaz ; an 11 year old who informed me about his previous 6 girlfriends, his current 2 year old relationship and how he is one of the strongest in his class – all completely and very innocent!

Topper Topazs are great fun to sail and incredibly easy compared to the Xenon. It is light and goes into irons very quickly when pointing into the wind. They are extremely manoeuvrable and great fun when learning to sail.

Tuesday, 6 October 2009

Xenon real Handicap

So just what is the handicap of a Topper Xenon??

Being a good citizen I registered it at the club when I arrived as PY1070 – just like the booklet tells me.

topper xenon handicap

The Lasers which I race against are ‘officially’ PY1078 and there has been some comment in the club that the handicap PY1070 is perhaps a little low ….(or we have very good Laser sailors, or I am particularly rubbish). It has even been suggested that Topper might promote low handicaps to make their boats faster!! <gasp!>

So officially at Wivenhoe Sailing Club, Topper Xenons are now rated as PY1075. This by co-incidence is the same handicap as Brightlingsea Sailing Club uses.

In my quest for the truth, I looked at a couple of other club websites and had a laugh at Erith Yacht Club who has gone totally the opposite way and has given their Topper Xenon class a local handicap of 1035!!

I suspect that a major issue is that when we race, the Barman and I are both quite heavy fella’s and this might cause some of the apparent slowness. Read here for the weight guide lines!

That said, last Sundays race went extremely well for the Barman and I. Despite the spinnaker detaching itself from the bow sprit and the forestay accidentally not been undone when the jib was rigged, we crossed the finish line a credible 2nd just behind the lead Laser. Lessons described in the blog posts below are working.

Saturday, 3 October 2009

Sailing with a Cunningham

In an earlier post I highlighted that the Topper Xenon has a cunningham in oppose to a downhaul. This is not just another rope and is extremely useful when racing and of course sailing in general.  If you have a Xenon you have got to learn how to use it. In our last race the Barman and I noticed a significant improvement.

The cunningham adjusts the tension in the luff extremely quickly and easily. By hauling it in or easing the line, the tension in the luff can be changed, thereby shifting the point of maximum draft forward or aft so as to optimize the sail shape.



I have found the greatest impact is when you are trying to point upwind on a close haul. If the cunningham tension is on, you don't point very high.

This bit from the Xenon manual starts to now make a bit more sense....

For a medium wind (crew sitting out hard, but able to sheet the mainsail to the centreline) you should be able to use maximum power. Use very little or no cunningham. The outhaul should be set so that there is about a 3in (7-8cm) gap between mainsail foot and boom at the point of maximum chord. Try to keep the boom on the centreline, provided that the boat remains flat.


The jib can be eased about 1-2in (5-10cm) from maximum tightness for optimum performance. As the wind increases, reduce the power in the mainsail by pulling down on the cunningham progressively until the boat feels comfortable and balanced again. If you have tell tales on the leech, use enough gnav to keep them flying.

For very windy conditions flatten the main by tightening the outhaul, tensioning the cunningham further (with a fully-battened sail this has the effect of flattening the sail without pulling the fullness forward and can therefore be used much more than with a conventional mainsail). Sit out hard and sail free.

In light airs, use little or no gnav to allow the leech to open.

Sunday, 27 September 2009

Xenon Rudder

A comment I have about dinghy boats is that often are not the manuals available to show you how to fix minor problems. The only knowledge source is in the collective mind of the sailing club. For example, when I snapped all the lines in my rudder (see Man Sailing ) I was left guessing as to exactly which bolt the two lines should be threaded. Well if you have this problem, look at the two pics below and this will give you a clue.


Before you get too far in re-threading your stock and tiller assembly, you need to make a decision as to which type of cord you are going to use. Yes! There are 2 types of cord; that which 'gives' a bit and that which doesn't. The cord which doesn't 'give' or stretch is generally used for halyards and the like - nothing worse than sails coming down in a race and apparently the other type is more useful for sheets.


Before the man sailing day my rudder was pulled down on a 2:1 pulley with non-stretch cord. I have made a decision that since I am likely to hit mud again that it will be a better idea to use the stretchy stuff; it's cheaper as well. It's the white cord in the image above.

Speaking of cost, I was gobsmacked by the price of a stock and tiller assembly + rudder blade. At the time of writting it is in the region of £500 - see here. To all Topper Xenon owners, look after your rudder.

Monday, 24 August 2009

Topper Xenon Launching at Wivenhoe

I finally have created some content of my own. Here is my father and I taking the Xenon out for his first sail on her from Wivenhoe to Colchester and back up the River Colne. I chose what I thought was a safe passage, but yes we did have an incident on the way!!...more later.

Forgive the music, I was under a bit of time pressure to get this 'out there'


Saturday, 15 August 2009

Laser Blogger ?

I'm not the only one that blogs about trying to sail. This chap is interesting, he's 60+ and it appears be sails one of those pesky lasers that I am always trying to beat ...

Actually I have been a little cruel and linked his entry about hating Laser sailors... I don't really I promise!

http://propercourse.blogspot.com/2006/07/seven-reasons-to-hate-laser-sailors.html

Monday, 3 August 2009

Laser Vago Planning

There is a dire lack of videos out there of what a Topper Xenon looks like when it is planning. To give a clue of how the Barman and I looked (albeit briefly) before we capsized I found this video with a reasonably similar looking boat. It does take a bit of skill to do this and they are not out for their first sail.

The Xenon is slightly larger and I believe has a slightly lower handicap (just) - it starts getting picky when you try to decide whether it is with or without trapeze.

Have a look....

Saturday, 1 August 2009

Hydroptere - World's Fastest Sailing Boat

No it is sadly not my little dinghy.

Sadly it is also a French boat - honestly I thought we invented everything. :)

So what is it?

The World's fastest sailing boat is the Hydroptere - a hydrofoil trimaran giant. If they ever want me have a go on it and make a report I am ready.



Reading about it on the web it has apparently hit an amazing 61 knots!!! However I see that back in December 2008 it made the headlines when it hit that amazing speed and wiped out!! Look at the link below and see the pics! To right such a massive boat it had to be towed to shore.

http://catsailingnews.blogspot.com/2008/12/hydroptere-61knots-and-huge-crash-with.html

http://yachtpals.com/hydroptere-4036

Thursday, 30 July 2009

Trapeze required for Xenon

I have being mulling over how we came to capsize the Xenon and how we could have avoided it - thoughts are with me still because I am only just loosing the stiffness and bruises I developed last Sunday.

Given that from the weather station records it was blowing F5/F6, and we, without a care in the World, popped the spinnaker up on a dinghy, I think we were pushing it. It was a very gentle blow over and it makes me think that we might have been able to avoid it if The Bar Man, my loyal crewman, had had a harness for the trapeze kit.

If anyone knows of one going, let me know!

Sunday, 26 July 2009

How to Capsize a Topper Xenon

I finally capsized the Topper Xenon with the Barman!

Today was a damn good outing - HW was at approx 4pm and we launched at about 2:45pm from Wivenhoe Sailing Club. May be it was a little ominous but I botched the start again - need to get the rudder down faster so I get control of the boat before we get blown into the mud in front of the club house. Knee deep in mud we had a second launch and were much more successful.

The pic above shows how good the wind was - we were out on the peaks. It's on days like this you need a warm-up program as you get a proper workout as the invisible hand (called the wind) flicks the sails with its finger randomly. At 3:45pm we were opposite Bateman's Tower at Brightlingsea (took about 50min - remember we had a botched start). Hmm seems we were averaging 6 m.p.h. which is not too bad - feels faster!

There were a couple of skiers about and oddly enough the RNLI were attending a boat on the east shore.

We had turned and were heading back when it all happened. We tried to line the boat up for a mega down-the-river-gybe with the spinnaker up all the way. We were just about on the plain as it was but this was going to be even faster - sadly not. Only a couple of minutes after we had the spinnaker up, we were over powered by the wind and into the Colne River we went - salty yum.


So we are in the water. Initially puffing because of the cold. All of a sudden the boat is massive - only our heads are above the water and the boat towers high-up floating on its side. We have to right her. I swim round the back and the dagger board is above my head at the top of my arms reach. I get both hands on. Kicking my feet and hauling myself up I get laid across feet still in the water. Nothing happens. Slowly it starts to move towards me and we shout at each other as it comes up straight. Sails up and wind blowing it starts to race off and blows over again. This time worse. The mast starts to sink and she begins to turtle. This is not good. Our arms are aching as we try to haul ourselves out of the water and right the boat. It starts again but blows over. We keep going and getting tired fast curse not going to the gym enough. A speedboat approaches and offers help. They haven't a clue what to do. We need to get the nose to the wind when we right her. A rope is tied to the front and it hauls the nose towards the wind. Another young guy pitches up in a speedboat but he is on his own and useless. We start again. Tired, it's getting harder and I understand how people get too exhausted to do anything. It works though and I try to get over the side. It's too difficult now and I go over the transom at the back instead. I bring down all the sails. The Barman needs hauling on board, he's tired out as well. We re-organise the sails. Thank the speedboat people and get on our way. We are knackered.
It's not over though as we have a few miles to do.

However this is when the good bit happens. All the time I thought I had been on the plain previously were mistaken. We were hurtling along when all of a sudden the boat lifted up above the water and we had a significant turn of speed - WOW it made it all worth it.

There are many lessons learned here - see my coming blog about gennakers (!) - but I would recommend if you are going to do daring things with dinghies and they are 10ft+ it is well worth getting a mast float. Next time I go out, I need to take the mast down and wash the top where it scooped mud from the bottom of the River Colne (meconium style [er....look it up]).

Saturday, 18 July 2009

How to sail the Topper Xenon


Here is some useful information for me and my crew to remember when sailing the Zambezi Shark (aka Topper Xenon) - particularly the Barman, as we were definitely rusty during Friday evening's pursuit race er....or was it just me??
The aim this course is of course to beat those pesky Lasers. BTW everything below comes from the Topper manual so must be true..


Upwind
For a medium wind (crew sitting out hard, but able to sheet the mainsail to the centreline) you should be able to use maximum power. Use very little or no cunningham. The outhaul should be set so that there is about a 3in (7-8cm) gap between mainsail foot and boom at the point of maximum chord. Try to keep the boom on the centreline, provided that the boat remains flat.

The jib can be eased about 1-2in (5-10cm) from maximum tightness for optimum performance. As the wind increases, reduce the power in the mainsail by pulling down on the cunningham progressively until the boat feels comfortable and balanced again. If you have tell tales on the leech, use enough gnav to keep them flying.

For very windy conditions flatten the main by tightening the outhaul, tensioning the cunningham further (with a fully-battened sail this has the effect of flattening the sail without pulling the fullness forward and can therefore be used much more than with a conventional mainsail). Sit out hard and sail free.


In light airs, use little or no gnav to allow the leech to open.


Tacking
Be aware that with a fully-battened sail the power comes on very fast after the tack. Do not over steer with the rudder as you will find yourself on a reach. Do not sheet in hard immediately, with either main or jib, until the boat h
as picked up speed after the tack. Whenever the boat slows down it pays to ease sheets, bear off a couple of degrees and then oint up again once the boat has regained speed. In light winds, when about to tack, make sure that there is some gnav tension, as this will help the battens to flick across. Ease the sheet a few inches before tacking. A sharp pull when you reach the new tack will also help the battens across.


Downwind
With an asymmetric Spinnaker, large distances can be gained (and lost!) very quickly. It is essential to keep the boat traveling at the optimum speed and direction towards the next mark. This direction will vary according to the wind strength. In light airs, at displacement speeds, where sailing higher will not result in a great increase in speed, it pays to sail low towards the mark. In marginal planing conditions, sailing higher will allow the boat to plane and the consequent increase in speed help to offset the extra distance traveled. The boat can be sailed progressively lower as the wind strength increases.

Just when to sail high or low and at what precise angles will come only with experience, so keep practicing. The crew can have a better idea of the correct angle to sail by feeling the power in the spinnaker sheet. Allow the crew to call the pressure. Sail as low as possible, keeping the pressure on, unless there are overriding tactical considerations.

Gybing
An asymmetric Spinnaker is far easier to gybe than a conventional spinnaker and takes no longer than tacking. Ideally you should always gybe when the boat is traveling at maximum speed as there is less pressure on the sails. It therefore pays to gybe 'reachto- run'.

If you try to slow down and gybe 'run-to-run' the spinnaker pulls the top of the mast forward, making the boat unstable and less controllable. The additional air pressure will make the mainsail harder to pull across. So be positive and gybe smoothly and at speed.

In strong winds you will probably have borne off so that, although the apparent wind still shows a broad reach, you are in fact running directly before the true wind. If you then try to gybe through your normal angle you will gybe on to a reach and be overpowered! So in strong conditions remember to gybe through a smaller angle. As with tacking, apply some gnav tension and Cunningham when gybing in light airs to help the battens flick across.

Saturday, 4 July 2009

Parts of a Sail

Since I am blogging about sails and trying to sound knowledgeable about how I know what each bit is called, here is the secret - a picture taken from Wikipedia with luff, leech, roach, battens, head, clew foot and tack all identified. It was a mystery to me where all these bits were until I had to start taking more notice of what the sail is meant to be doing....

Friday, 3 July 2009

Where should the Telltails go?

It is some time since I completed my RYA 1 & 2 dinghy sailing course. It is on these courses that you learn and prompty forget what things like the telltales should be doing to get you going as fast as possible. To prove my point, when last out on the River Colne, just short of Bateman Tower, even the Bar Man, my experienced crew could not remember.

After a few months of sailing I have now mastered the ability to look up at my sails and make a vague judgement as to their worth. Having spotted the telltales I felt it was the next thing to master in my quest to beat the Lasers.

Once you have the jib trimmed correctly, you can start steering the boat, using the telltales as guides. If the outside telltale "piddles," this means the sail is overtrimmed for the direction of the wind on the boat. You don't want to let the sail out, so you must head up. This, in effect, retrims the sails, except instead of bringing the sails in, you "brought the whole boat in."

If the inside telltale piddles constantly, or if the sail luffs (actual luffing, or just an inversion at the front edge of the sail), the jib is undertrimmed. You don't want to crank in more on the sheet, so you must retrim by bearing off.

Your goal is to make the outside tale flow straight back and the inside tale "lift" occasionally, meaning some air is getting to it, but not all the time. If you don't know how often the inside tale should be lifting, err on the side of too often. It's better to have too much air flowing along the inside edge of the sail, than not enough.


So Lasers, with this and the Roll Tack, you had better watch out.

The next intreguing issue about the sails is to understand what the telltales on the leech-edge of the mainsail are meant to do...

Monday, 29 June 2009

Roll Tack

Back to the serious issue of dinghy boat racing!


I mentioned before that we seem to loose a lot of distance when tacking against the Lasers and I think I now know why. Many reasons.... but principally it is too much rudder. Sounds odd as you would anticipate wanting to turn as fast as you can to pick up the wind for the next leg.

This weekend when on board the Topper Xenon with the Bar Man, we did some reasonably quick tacks and it was noticeable to me at helm that the boat seriously digs in on the corners and slows down (Chine technology?). I had heard of a roll tack but couldn't remember quite what it was.

That was until now.....

Roll Tacking Basics (video at end!!)

Roll tacking is a method for getting the boat through a tack quickly, without losing much speed or ground. Listed below are three basic advantages to a roll tack, which is used primarily in light air when boatspeed out of a tack is important. However, keep in mind this is not the end-all, be- all of dinghy racing. The best roll tacks in the world do not guarantee a win, and sometimes they can blow your concentration if they are used before you have mastered them.


  • Roll Tacking Basics Heel the boat to leeward about 10 degrees. This initial heel allows the boat to turn itself, cutting down on the rudder usage necessary to initiate the tack. Don't heel the boat too far. The object is to turn the boat slowly enough so you can control the tack. During this step, you should be able to let the tiller extension slip through your hand, with the hull of the boat doing all the work.

  • As the boat starts to come down on you, rock it hard to windward. Timing is important in this step. The goal here is to help the boat do what it wants. The biggest mistake you can make is to try to roll the boat too soon, "squashing" the tack, finding yourself head to wind, or on the same tack on which you started. This mistake costs much more than a regular tack would (and it feels horrible). Wait until the jib luffs and the boat feels as though it wants to come down on top of you. Then rock it hard. Rocking the boat to windward may feel funny, as though you're going to capsize. However, it's important to rock it this way. Sometimes the boat will stop the rock on its own, if you don't help. In fact, it may be good to practice this maneuver until you capsize a few times. If you're afraid of capsizing, your tacks will be mediocre. You must get the feel for how far you can go.

  • The purpose for this step is to get the sail through the tack as quickly as possible. Notice that, usually when you're tacking, there is a long period of time where the sail luffs through the tack. This step will alleviate that luffing, with a telltale "pop" of the sails.
    Once the boat is on the new tack, and still heeled up from the rock, flatten it quickly. This is the heart of the roll tack. The rock should have put the rail of the boat in the water. Now, when you flatten it, you are pulling the sails through the air, effectively increasing the wind speed over them. This gives you a nice push forward, accelerating you out of the tack. Note the position of the sails. They should be trimmed in during the flattening, but not all the way. When this "wind" is created, it acts as a lift, so the sails should be eased slightly. Then, when the boat is flat and up to speed, trim in the sails to pointing mode again.

  • This flattening should be done after the sails fill, but as soon after the rock as possible. With the boat up on its ear at 45 , it will slip sideways very quickly. Just watch someone who doesn't flatten immediately. They will lose a lot of distance to leeward, much more quickly than you would think.
That can sound quite complicated if you are not used to nautical terms so here's a video demo.



Could the Bar Man confirm we're okay to do this next outing and I'll report back of progress against the Lasers.

Sunday, 7 June 2009

Handicap System

I have discovered that it is not just enough to have the most pointy-fastest boat in the club. There is another thing called the handicap system which I must over-come.

Today's race took us up to the Ancient Roman Port of Hythe, yes up to King Edwards Quay in Colchester (who would have thought that Colchester has a port). In short, lovely sail through green fields to finally turn at the dirty arse Colchester bit. If someone dredged that bit at the top where we turned, there is a fortune to be made out of the marina that could be there. Instead Colchester has opted for the VAF further into town - read the link, I know which one I'd prefer.

Anyway, all was going well until we reached the inevitable turn. Another nautical lesson learned here about which object you refer to in sentences when going around port side - to me it is ambiguous as it could be either the boat or the buoy. As race rules stipulate, having gone round the wrong side, I had to perform a 360 spin - time lost but not too bad. We were still doing well and were vying for the lead. Unfortunately another disaster struck when we hit the mud, became becalmed and drifted into low hanging branches. We crossed the finish line 2nd, but the handicap system meant the Mirror that came last actually won.

So the handicap system is something I will learn to deal with in the next few races; for me and my crew (here on known as The Barman), we both agreed that we would prefer to cross the finish line 2nd than last.

BTW - going round port side means port side of the boat (I think my mind is set to look at everything from a different perspective).




Thursday, 4 June 2009

Wivenhoe Regatta 2009

Last week it was hot, hotter than the Med....er probably.

Unfortunately I couldn't get out on the boat because tides, crew and my flight to Edinburgh check-in time could not be co-ordinated. However I did manage to have a meander round the Wivenhoe Regatta and take some snaps. It was a great day for sailing and I found myself quite jealous of the boats going by - there was a good breeze and was a gorgeous day.

The Wivenhoe One design is a boat and feature of the day. I always find it strange even though a small number were built, (about 20) they attract such enthusiasm from their owners and they have been kept going for so long. FYI they are the smaller looking boats with the red and white flag (burgee) on the sail. The others are 100 year old smacks that are sailed in the Essex, Thames area.

Monday, 18 May 2009

Brave 3rd Sail

Sunday, 17 May 2009

"Er...Captain Hook, have you seen the weather report?", my new sailing buddy asked on the phone.

"Of course! Of course! I checked and it was a F5 and I'm positive that it is going to die down by this evening"

"Er...okay as long as you're happy...Ray who knows at the club says winds are 50m.p.h...."

Pah!...Seemed fine to me when I checked on the net a week before.

In between meeting my buddy at the club house I took the wife for a driving lesson and found a beach further up the coast at St Osyth. We parked and stepped out to look over the sea wall. HOLY COW!! - it really was blowing a gale and there were massive waves crashing into the beach. This was no time for cowards or to show any fear!!!

Launch time 5:30pm (high tide of course!!). Main sail reefed and jib furled (not for long though).
No problemo!!!.
Well I say no problem but because of the wind we were restricted to a 500 yard run in front of the club house.

It was brilliant though. We raced up and down that stretch like a speed boat and for the first time, I really was able to put the boat through a few of her paces - and she through mine.

Getting out the water...there's a challenge when the F5 gusting F7 is blowing straight towards the slipway. The answer is to come in as slow as possible, turn at the last moment and make use of all that lovely mud to land on - then dropping the sales as fast as you can.

Special note - New race-sailing buddy found. He knows what he is doing which helps on this machine.

Sinking Second Sail

10 May 2009

So, buoying with confidence I invited a mate from my MBA course for a sail on the new boat.

The sun was out, the sky was blue and winds very light. I carefully rigged the boat and got her in to the water. With my carefully acquired knowledge of when to launch and retrieve (high tide of course!!!) everything was going well.

Although the wind was light the Zambezi Shark responded well........as we continued though she got increasingly sluggish. Was it me? my new-to-sailing crew member who was pulling the jib sheets to tight? ....were the winds just too light?

A dinghy from an earlier race was passing the other way and I proudly looked across from the helm....something was wrong! They weren't gasping in awe at my good looking boat and the speed of travel; it suddenly hit me........

...the bung was still attached to the dangly string on the rudder and we had been taking on water for the last 40 minutes.

After leaning over the transom and putting the bung back, sailing was no longer any fun. With all the water in the hull we were incredibly unstable. We rolled back.

Again - it was damn difficult getting the boat out, this time because it was so full of water. At the top of the slipway we waited 25minutes for the water to drain out before we could move to clean and park-up.

I was annoyed and will have to endure the bung joke for months to come.