The Marine Ecto-8 (also known as Ecto-H20) is a boat that is used to get to Shandor's Island.
History
After some trial and error, Ray Stantz managed to complete an iteration that stayed above the ocean, despite what his team mates thought. The Ecto-8 was utilized during the Shandor Incident when the Ghostbusters searched for the final Mandala node located somewhere on the Hudson River. Once Shandor's Island was in sight, Ray was forced to drop the others off and circle back for them or risk letting Ecto-8 get sunk by the unique geography.
Description
The Marine Ecto-8 has the same technical equipment that Ecto-1 has but it has the digital announcement boards on each side on the boat's roof, broadcasting Ghostbusters job advertisements, specials, and their phone number.