The second attack on Paisly was not quite as well co-ordinated.
The first one we landed some 25 of 30 nobles the same turn. And then proceeded up into Terran all the way to the city.
And it was a 78+ hour trip for units with Siege I remember. . . ugh. That was a pain.
After the failed second assault I think we vetoed any assault via the sea route again 
Just takes WAY too much coordination to make work.
Madinans spend all their time on the land. They even built themselves a silly bridge for the crossing.
In D'Hara, we set sails just every time we change duchies. Or realm. Being on an island doesn't make you any better sailors than the Giaskians.
