hatchway has definitions from the field of nautical
1
[ noun ] (nautical) an entrance equipped with a hatch; especially a passageway between decks of a ship

Synonyms

scuttle opening

Used in print

(The Family Fallout Shelter. Office of Civil and Defence...)

An alternate hatchway entrance , shown on page 25 , would reduce the cost of materials $ 50 to $ 100 .

Plans for the shelter , with either a stairway or hatchway entrance , are shown on pages 26 and 27 .

*