Fair winds on your passge down the St. Lawrence - I did the same passage
in 2009 and I'm still here in Labrador! (Leraving for Azores
After Rimouski, I don't know of anywhere along the North Shore except maybe Sept Isles - can't remember.
Assuming you are coming through the Strait of Belle Isle - Port Saunders on NW coast of Newfoundland, Blanc Sablon in Quebec
(Strait of Belle Isle).
One name definitely to remember is Riteway Construction - it's a marine
yard run by John Belbin with his brother Preston - near L'Anse au Loup. The yard is actually in L'anse au Diable (Lance o Jable in local speak) 5 miles weast of L'anse au Loup. These guys can fix anything! They haul boats with a travellift and will store too for $5.50 per day. My boat has been with them for 3 winters.
If you have time and are interested I'd definitely spend some time on the Labrador coast - not just the Strait (Red Bay) but Battle Harbour and down (north) the coast to Cartwright. Lovely anchorages
St. Anthony can haul out
some designs of boats but is not equipped for keel
sailboats. Englee no longer has a working travellift I'm told.
Please let me know if you'd like more info on Labrador and the Northern Peninsula - never been to Lewisporte.