Cat in 10-15' seas with around 3-4 second period

[Pete7]

Originally Posted by UNCIVILIZED

I'm curious as to in what universe physics holds water together while forming waves that are 10-15' in height, with a 3-4sec period? Since it surely isn't on Earth, nor in this one.
And many of the rest of the 'observations' on the conditions, 'seamanship', etc. herein are also speci-FICTION as well. As in akin to science... fiction.

I will give you two other possible scenarios in addition to Dockhead's suggestion of a shallowing seabed. Firstly strong wind over tide and secondly wind being funnelled by land or between two islands. There is a classic one between Lanzarote and Fuerteventura which we got caught in. Left Lanzarote sailing south with F2 winds and engine on. Crap all over the decks and everyone sunbathing thinking its someone else's problem to sort out but its flat calm so not to worry. When we cleared Lanzarote we were hit with F7 in 90 seconds with a big No 1 Genoa up. I was young and fit at the time but getting that hank on sail down and staying on board whilst frequently being submerged was character building. At least the green water washed the blood and skin away. A valuable lesson learnt the hard way and still remembered 30 years on.

[CbroTheDude]

Originally Posted by SVNeko

You're making friends here everywhere you go.

Am I not? :P

[44'cruisingcat]

Originally Posted by Jim Cate

I wonder if the reported 3-4 second period takes into account that the boat is moving towards the wave motion, and at a significant fraction of the wave train velocity? The resulting Doppler effect will shorten the apparent period considerably; this could help explain some of the conflicting thoughts above.

Jim

And is it really worth debating?

[Kenomac]

Originally Posted by Pete7

I will give you two other possible scenarios in addition to Dockhead's suggestion of a shallowing seabed. Firstly strong wind over tide and secondly wind being funnelled by land or between two islands. There is a classic one between Lanzarote and Fuerteventura which we got caught in. Left Lanzarote sailing south with F2 winds and engine on. Crap all over the decks and everyone sunbathing thinking its someone else's problem to sort out but its flat calm so not to worry. When we cleared Lanzarote we were hit with F7 in 90 seconds with a big No 1 Genoa up. I was young and fit at the time but getting that hank on sail down and staying on board whilst frequently being submerged was character building. At least the green water washed the blood and skin away. A valuable lesson learnt the hard way and still remembered 30 years on.

In Newburyport, Massachusetts at the mouth of the Merrimac river, the conditions seen in the OP's original posted video of the catamaran are not uncommon. Wind, tide and current all combine to create conditions of 10-15ft choppy seas with short period waves with potentially deadly consequences. Just last week another fishing boat capsized and the crew was fortunately rescued.

But of course according to some Beauford experts on this forum, this could have only happened in an alternate universe.... Not in Newburyport.

[nickmilon]

Take a look at the rest of this guys videos on his youtube channel
Then you can realize:

1. This scene is from Myconos Greece
2. This kind of waves/weather is typical around this island
3. The videographer is standing on land and the video has been taken from a low flying drone.

I am not a meteorologist and don't really know the dynamics of this type of waves but having been in this place many times I can attest that this type of local weather/waves happen often during meltemi periods.
I tend to agree with @Pete7 that it has something to do with wind being funnelled between two islands.
Couple of more observations:

• Cat appears to be an FP model
• Probably its motoring to a nearby shelter