Many of the sailors who arrive here from Portugal complain about seasickness. Some of them even give upp and take a airplane to the Caribian where they join the boat.
There is also much talk about seasick pills.
Now I think that the sailors should show some compassion for their pour body. It is used to be on land where they nowadays walk on flat even surfaces. Then suddenly the owner decides without giving their body time to adapt that now they are going to put him on a mowing boat.
The body of course have spent years finding the fine balance needed for walking upright using all his senses to do a good job.
Obviusly he needs some time when suddenly conflicting information from different senses has to be processed in the brain.
For most people the trip from Portugal to here only takes a few days. That is not enough. At least a weak is needed for most people. To really be at one with the sea I think at least a month is needed. Then the sailors body can do a good work of providing his owner with the desired functions and everone will be happy.
This is one reason why I like long passages and why I do not fraction a good long haul into many misirable small jumps. Luckily I do not suffer from seasickness but there are many more things to consider like that it takes time to shift protein building new muscles and learning to behave in the marine enviroment.