Fishermen's missions in Cornwall and Devon which are to close could be replaced with smaller facilities, the charity which operates them says.
The missions in Newlyn and Brixham are among the last seven in Britain.
The Royal National Mission to Deep Sea Fishermen confirmed on Thursday all seven were to close within five years because the buildings were under-used.
Charity chief executive Dan Conley said in-town offices with some facilities might be set up afterwards.
He added that some form of presence would remain in the towns.
The mission provides support, refuge and pastoral care to seafarers, particularly fishing communities.
It has had a presence in Cornwall since 1896 and set up a base in Newlyn in 1903.
The Brixham mission centre has served the maritime fishing and seafaring communities of Devon for many generations.
Mr Conley said said that there would still be some form of physical presence in the towns.
The other five mission buildings which are to close are in Scotland. They are in Eyemouth, Fraserburgh, Mallaig, Peterhead and Scrabster.