Berk dockyard

Risuki at the Berk dockyard

Berk dockyard from catapult

School boarding boat

The Dockyard is the place you rush to in the beginning of the game to try and get to Berk. (At the old version of the game)  

However, you miss it and Hiccup offers you a ride to the school on the back of Toothless instead. 

The Dockyard is linked to berk by a series of wooden walkways, and there is a catapult within the direct area as well. 

You can instantly get to the School by boarding the boat at the Dockyard.