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Here, you really need to pay attention to what kind of system you're putting into your boat. You need to know that where gyro stabilizers are restricted by only having a constant force available to stabilize the boat, the stabilizing forces of fin stabilizers increase immensely as the speed of the boat increases.
If you have a good understanding of physics, you will know that the forces vary by the square of the speed. Hence, at speed there can be huge differences between the stabilizing forces of a fin system and a gyro. If you have read this far, you probably understand that I am biased in this discussion.
I have the privilege of working for the world's leading manufacturer of fin stabilizers for yachts and have a personal interest in promoting the Vector fins. But, if you have a good understanding of physics, the Vector benefit will be self-evident.
With that said, I will argue that there is a big difference between the various systems when it comes to stabilization efficiency and that boaters in general, have a lot to win from being critical when they investigate the various systems. The Vector Fins from Sleipner Motor has been installed on the majority of the world's yacht and superyacht brands and has a proven track record for being super performant.
Many of the world's most known yacht producers have chosen Vector Fins as their standard stabilization system because they know it is a safe way to get happy customers. There are also several other advantages with the Vector fins, for instance; reduced drag compared to old-style flat fins and their ability to create lift, frequently resulting in a reduction of fuel consumption and an increase in top speed. However, this article is about how to prevent seasickness, so let's stop at that. All boaters dream about evenings like this.
Based on my experience at sea, of which many years have been spent taking guests out daily, there are several things you can do to reduce the risk of getting seasick:. If you skipped the first part about how stabilizers can cure seasickness, you can jump back up and read about the reasons behind why people get seasick, and how stabilizers can eliminate the problem by clicking here. Boating should be comfortable, and you're not comfortable when you're seasick.
I hope this article has given you some insight into why some people get seasick, how you can avoid it, and why we confidently claim that Vector Fins are the permanent cure for seasickness. Have a fantastic boating season, and if you're considering stabilizers, feel free to reach out and contact us. By: Marius Torjusen. Marius Torjusen is a former yachtsman and sailing instructor who has participated in many world championship sailing events, followed by seven years as a captain on private yachts in Norway.
He is a certified captain by the Norwegian Maritime Authority. Here we share our expert knowledge and guidance on boat equipment, tips for maintenance, as well as practical experiences about life at sea. All rights reserved. Why do people get seasick, and how can you avoid it?
Even those who are affected by seasickness more than average can enjoy what boating has to offer with the right equipment on board. This article will look into what causes seasickness and how you can avoid it on a yacht or a boat.
What is seasickness? Even a small reduction of provocative motions makes a significant difference What frequently comes as a surprise to many, is how little of the provocative motions you must reduce to reduce the risk of being seasick considerably. Example: You are on a boat, which rolls in 4 seconds intervals 0,25 Hz. The acceleration of the boat's movements is rather fast, say 3.
Exposed to these forces, statistically approx. On the same boat, we activate stabilizers and eliminate 80 percent of the roll. The roll period will still be 4 seconds, but the boat will roll 80 percent less, which means that the RMS acceleration falls equally. In this case, statistically, approximately 10 percent of the people on board will experience signs of motion sickness.
The reason for this reduction is that we no longer encounter violent accelerations of the head. Source: Workplace Health and Safety Information Which movements are we exposed to on a boat that can make us seasick?
Source: World Maritime Affairs It is these movements that cause us to be seasick, and some are more uncomfortable than others. How do we counter the effects of the movements that make us seasick?
Heave and pitch Heave and pitch movements are reduced as the boat or yacht gets bigger. Rapid waves don't create much roll. You typically get these in sheltered waters or just as the wind picks up. Long, slow waves typically swells , is what you have in the days following heavy winds.
These make the boat roll with the waves, but the boat usually rolls slowly and just follows the wave. Unfortunately, the typical waves we encounter at sea, however, have a frequency around the boat's natural roll period.
Usually, you have between seconds between each wave, and in these conditions, the boat will roll far beyond the effect of the wave. So even if the wave only rocks the boat degrees, the inertia energy of the boat, or its momentum to keep rolling, will make it roll much more than the actual angle of the wave.
This gives large movements and sudden acceleration and is the perfect recipe for seasickness. Surge and sway As mentioned at the beginning of the article, it is repeated accelerations that make us seasick. Stabilization systems onboard modern yachts My colleague, Ronny Skauen, has written an in-depth article about the various stabilization systems for yachts and what you should consider when selecting yours.
In short, there are a few different systems that dominate the market today, and we will look at the pros and cons of the most popular systems below: Vector fin stabilizers Flat fin stabilizers Gyro-type stabilizers On a yacht without stabilizers, rolling make the balance center of a person's head move fast from side to side. Yacht stabilizers work differently at different speeds At anchor stabilization — how not to get seasick when you're sleeping If you mostly use your boat at anchor, you can safely choose any of the three dominant systems on the market today.
While all systems will keep the boat stable, some slight differences could be worth considering. Gyro stabilizers have a spin-up time of approximately minutes. Meaning that they will only start working a good while after you turn them on.
Once they are on, though, they work very well at anchor. Leonard surveyed 38 seasoned cruisers and found that three-quarters of them got seasick on nearly every passage.
Seasickness symptoms are usually progressive, starting with yawning, salivation, cold sweat, dizziness, headache, and fatigue, and culminating with nausea and possibly vomiting. During the first few days at sea, many people also report problems concentrating. The pitching of ships in three dimensions causes sufferers' balance to go out of step, causing nausea Credit: Getty Images. But experienced sailors often have their own tricks to get through seasickness as quickly as possible.
Sebastian Smith is one of them. Together with his wife Adele and two small daughters, he loves long sailing trips, and has written books and blog posts on sailing and dealing with the motion sickness that comes with it. It also can come on quite suddenly. People may be having a good time, looking relaxed, and you see the change in their face all of a sudden. I now know that even if I get the first twinges, I will get over them and get through it. His wife Adele still gets seasick on the first day or two of a long trip.
Smith says that for some, the best way to tackle seasickness is to simply sleep it off. One expert sailor says steering clear of greasy food before boarding can help Credit: Getty Images. Not all can manage it, though, and many people must rely on medication, such as Stugeron or Dramamine.
But try any medication ashore first, cautions Smith, as some are powerful sedatives. Dawood says that for prolonged duration of action — up to three days — the first medication to try should be a Scopoderm skin patch though the patches do have side effects, and should always be prescribed by a doctor or travel clinic.
But when you take your medication also matters. One of the sailors surveyed by Leonard, Andrew Burton, used to run the Adventure Sailing program, regularly taking a fleet of sailing boats between Bermuda and the Caribbean.
Once, he had nine boats with 54 crewmembers, and the team was stuck for three days in Newport because of bad weather. Seasoned sailors suggest you take seasickness medication not a few hours before travel, but much earlier, at least the night before. Another tip is not to step on a ship with a hangover. Smith advises to avoid alcohol for at least a couple of days before the trip.
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