long-cours.62
Guru
It means
"little" more than you interpreted , if not they don't use :
"imperativement"
and
"trés prononcée"
I'd interpret that as the reviewer saying that the ride is uncomfortable or unpleasant and they expect stabilizers would help. It doesn't necessarily mean the boat isn't stable enough.
"little" more than you interpreted , if not they don't use :
"imperativement"
and
"trés prononcée"