Yes SHE is a Seafarer, You can find info @ Seafarer Reasearch Center and Seafarer Homepage on the net. The seafarer line rangedd from 22 up to 38 feet manufactured in Hunington Long Island, NY. They ceased operation in 1984 do to the economy.
They were designed by S&S and McCurdy and Rhodes. I currently own a 1980, bought new at the factory 26 foot and a 1982 30 foot bought 5 years ago and I also owned a 23 foot Seafarer. All great crusing family boats, The Seafarer originally were manufactured in Holland before being built in the US.