Jimmy Dean is west of the harbor, high up on the mountain near the edge of the anti-dragon shield (camp overlook). Jack Bolton is beside a wyvern's nest near a well setup camp, with a tent/table and teleporter (camp freedom), north of the talking tree that had a problem with 3 wyverns (from the tree, the ledge you need is a couple seconds flight north east).
On the fjords map the rough locations for the 9 zeppelin parts are marked with an
S (they are all in or near nests, other than the one in the treehouse). Alternately, from the D2:ED
walkthrough,
-Crystal 1: on the tiny island just south of the entrance to the fjords; climb
up the ladder and retrieve it from on top of Yggdrasil
-Crystal 2: on a low cliff east of Camp Sentinel View, across the water from
Camp David
-Crystal 3: on a cliff in the middle of the bend just before the entrance to
Rivertown Gorge [EDIT on the same ledge as a boarded-up cave door]
-Rudder 1: a short ways east of the Camp Freedom teleporter
-Rudder 2: halfway between the Imps' Lair and Camp David
-Rudder 3: on a low southwest cliff near the exit to Rivertown Gorge
-Compass 1: on the cliff directly opposite Rudder 1
-Compass 2: high up above Moor's shack, just northeast of the entrance to
Keara's Flying Fortress
-Compass 3: on a cliff just before the bend on the way to Rivertown Gorge