Seasick wind speed?

Question

I get seasick fairly easily and am wondering what the wave conditions are going to be like if the winds are blowing at 30km/h for a boat the size of a large yaucht?

Answer 1

Wave size is determined by 3 factors - wind speed, wave fetch, and depth of water.
Obviously, higher winds produce bigger waves. The fetch (distance the wave can travel before hitting big differences in water depth and/or land) matters a lot, as does depth of water.
Deep water produces bigger waves that shallow water.
So, if winds are 30k (15 knots), in a shallow area, you will only get a chop, which is bumpy. If its deep, you will get more a rise/fall swell, which usually equals seasickness.

Answer 2

what do you do in the boat when you are feeling sick?

I know that if some people read in the back seat of a moving car their eyes are following the pages while their stomach is following the bumps in the road.

I LOVE Boating and I have never been seasick although I used to get carsick all the time.

Now this is not my theory, I saw it on some science show but it fits completely with my experience.

your stomach is bouncing up and down and your brain is probably looking at the stillest part of the distant scenery (because thats what everyone tells you to do. right?) that is a conflict in your brain.

You feel one way and you see something else and you are programmed instinctively to vomit as a reaction to suspected food borne illness.

Here is my advice

1). to combat the movement in the first place clench your abs as you would if you were expecting a punch in the gut so that your stomach doesn't slosh around so much anyway.

2). Go to the front of the boat and watch the water and get a feel for when the waves are coming so that YOU CAN clench your abs at the right time. This works for me but I dont know about large yachts . I hope it works for you too It can only be an improvement

Good luck

Answer 3

Getting sea sick has to do with the balance factor in your ears, the rocking makes your body want to get "LOW" on the deck to avoid the rocking, it does it by making you sick, and pulling you to the ground. Take "Bonine" a few hours before you go on the water, you'll be fine. Seasick medicine shunts the electrical impulse from the ear to the brain, it is also an ingredient in "Truth serum", don't take too much, and start blabbing about something that you don't want anyone to know.

Answer 4

What KS says is true. Also, what is the size of a large yacht? Different people have different ideas on size. 30 knots can kick up a wind, it also makes a difference on type of boat-sail or power? Sail will go through the waves better.

Answer 5

On a yacht, get to the BACK, not the front. The front (bow) will be bouncing up and down much more than the back (stern).
Get as far back as possible, find somewhere comfortable and OUT OF THE WAY to sit. Then watch the horizon: look for buoys, sea-gulls, the land, clouds etc.

Your mind knows the body is going up and down. If you watch something close to you on the boat, then it doesn't move relative to you. So you feel sea-sick (mind says: going up and down; eyes say: no I am not). Watching the horizon means mind says: going up and down and eyes say: yes I agree.