The Northern 25 is a Canadian sailboat that was originally designed by Philip Rhodes and adapted by Dennis Fernice as a cruiser and first built in 1970.

Northern Yachts bought the molds from O'Day Corp. and Dennis Fernice made changes to the design, including adding a fin keel and a taller cabin, to give 74 in (188 cm) of headroom below decks, but at the expense of cockpit forward visibility.

It has a masthead sloop rig, a spooned raked stem, a reverse transom, a skeg-mounted rudder controlled by a tiller and a fixed fin keel.

[1][2] The design originally incorporated boom roller reefing, but many were later modified to eliminate this feature, due to sail wear.

One minor annoyance with this boat is that people seated in the cockpit will have difficulty seeing over the cabin top because it arches up over the centerline to give an impressive 6' 2" of headroom down below.