Begs the question really - why travel across Kent to travel to Boulogne? Mainly because it's much further on from Ramsgate to Boulogne than Dover/Calais so it might be a faster vessel but overall I reckon the trip will be longer. Also there's no motorway to Ramsgate and the A299 isn't all that quick if I remember correctly According to the Euroferries web site it is only 1hr 15 mins berth to berth, so about 15 mins quicker than Dover-Calais and 45 mins quicker than Dover-Dunkerque. I would definitely be tempted if I were heading to the Somme, or to Burgundy or even to Normandy (the three places I am most likely to go to in France). It wouldn't really be any use for when I go to Belgium or Germany, for which Dunkerque is more convenient. It's something different though, so definitely worth a try. As for Ramsgate, the A299 is dual carriageway in parts (though not the last bit), but then again I don't mind that because I use the A2/M2 when I go to Dover anyway so it isn't all that much different.