Menu

Ireland's sailing, boating & maritime magazine

Displaying items by tag: Downwind

#HowToSail - Downwind or reaching starts can be a deceptively tricky proposition — but Sir Ben Ainslie has a few top tips for your strategy on the line.

The America’s Cup winning skipper and multi-time Olympic gold medallist shares his wisdom with Yachting World, starting with the best position at the start — which is more about the right angle for your boat than closeness to the first mark.

Assessing the rest of the fleet is also of key importance, as the behaviour of give classes will be predictable in certain conditions.

Most of all, clean air is king — and getting it can mean treating the race more like a game of chess, such as giving up position in the early stages to avoid a weather trap.

Yachting World has much more on Sir Ben’s downwind start tips HERE.

Published in How To Sail
Tagged under

A period off the water has allowed class measurer and Dun Laoghair sailor Roger Bannon put together some detailed an interesting figures on sailing a Laser SB3 downwind. The analysis, originally posted on a Dublin Bay SB3 email list and reproduced here with Roger's permission, look at the benefits of soaking low versus going high on your VMG downwind in a Laser SB3.

The post has sparked quite a debate on the SB3 email list. You can join in HERE on our dedicated forum thread.

 

From experience it seems the critical speed thresholds for SB3s are at 4 knots, 6 knots and 15 knots.

 

It seems when it is windier, the jump in speed required to make it pay is quite high. This perhaps justifies luffing aggressively in windy conditions to get a really big speed increase but the benefit diminishes the faster the boat goes unless you are able to come down with the new apparent wind.

Basically once you are doing 15 Knots plus, 40 degrees off dead downwind, getting back down with the apparent wind, whilst maintaining the speed, appears more important than increasing speed. In other words luffing at 15 Knots will need you to increase the speed to 20 knots for less than 10 degrees of luff to make it pay. On the other hand if you can soak down 10 to 20 degrees whilst retaining the 15 knot speed, the VMG improves astronomically. Ben Duncan appears to adopt this strategy while the most of us are whooping it up miles above him.

The matrix also shows that unless you get fairly significant % increases in speed at lower speeds it definitely pays to soak rather than luff if you can retain your core speed. Luffing 10 to 20 degrees as you get closer to dead downwind does not seem to hurt that much but it very quickly gets progressively more demanding of a speed increase to make further luffing pay. In other words, when soaking do not be afraid to occassionally luff 10 to 20 degrees to keep up the speed but do not overdo it.

10 degrees sounds like a lot but the next time you are sailing downwind you will be surprised how small a steering movement is required to make a shift in direction of 10 degrees.

 

Food for thought!!!!

 

Can the good instinctive downwind sailors give us their view?

 

Picture_6

 

 



Published in Your Say
Tagged under

Ferry & Car Ferry News The ferry industry on the Irish Sea, is just like any other sector of the shipping industry, in that it is made up of a myriad of ship operators, owners, managers, charterers all contributing to providing a network of routes carried out by a variety of ships designed for different albeit similar purposes.

All this ferry activity involves conventional ferry tonnage, 'ro-pax', where the vessel's primary design is to carry more freight capacity rather than passengers. This is in some cases though, is in complete variance to the fast ferry craft where they carry many more passengers and charging a premium.

In reporting the ferry scene, we examine the constantly changing trends of this sector, as rival ferry operators are competing in an intensive environment, battling out for market share following the fallout of the economic crisis. All this has consequences some immediately felt, while at times, the effects can be drawn out over time, leading to the expense of others, through reduced competition or takeover or even face complete removal from the marketplace, as witnessed in recent years.

Arising from these challenging times, there are of course winners and losers, as exemplified in the trend to run high-speed ferry craft only during the peak-season summer months and on shorter distance routes. In addition, where fastcraft had once dominated the ferry scene, during the heady days from the mid-90's onwards, they have been replaced by recent newcomers in the form of the 'fast ferry' and with increased levels of luxury, yet seeming to form as a cost-effective alternative.

Irish Sea Ferry Routes

Irrespective of the type of vessel deployed on Irish Sea routes (between 2-9 hours), it is the ferry companies that keep the wheels of industry moving as freight vehicles literally (roll-on and roll-off) ships coupled with motoring tourists and the humble 'foot' passenger transported 363 days a year.

As such the exclusive freight-only operators provide important trading routes between Ireland and the UK, where the freight haulage customer is 'king' to generating year-round revenue to the ferry operator. However, custom built tonnage entering service in recent years has exceeded the level of capacity of the Irish Sea in certain quarters of the freight market.

A prime example of the necessity for trade in which we consumers often expect daily, though arguably question how it reached our shores, is the delivery of just in time perishable products to fill our supermarket shelves.

A visual manifestation of this is the arrival every morning and evening into our main ports, where a combination of ferries, ro-pax vessels and fast-craft all descend at the same time. In essence this a marine version to our road-based rush hour traffic going in and out along the commuter belts.

Across the Celtic Sea, the ferry scene coverage is also about those overnight direct ferry routes from Ireland connecting the north-western French ports in Brittany and Normandy.

Due to the seasonality of these routes to Europe, the ferry scene may be in the majority running between February to November, however by no means does this lessen operator competition.

Noting there have been plans over the years to run a direct Irish –Iberian ferry service, which would open up existing and develop new freight markets. Should a direct service open, it would bring new opportunities also for holidaymakers, where Spain is the most visited country in the EU visited by Irish holidaymakers ... heading for the sun!