I understand that the hatch is similar to an overhead hatch. It could be described as an escape hatch. This information comes from lagoon.


Warren S/V Scuba Doo
Lagoon 50 (winner of best crewed yacht under 55 feet at the St. Thomas crewed yacht boat show).

https://www.cyabrochure.com/ebn/2307/pdyrX/6642/4///