May 1951	“Junior Sea Friend” was inaugurated.
July 1951	“junior Sea Friend’s Federation of Japan”(JSFFJ) was organized. The first Festival of Sea Cadets was held.
August 1951	JSFFJ organ “Sea Cadet Corp” was established.
April 1953	JSSFJ was upgraded to a legal entity by the Ministry of Educaton and Ministry of Transport.
January 1964	The JSFFJ band was organized.
March 1967	Sending Cadets to Okinawa(The first time, 94cadets) was started.
May 1973	Art exhibition “Warera Uminoko Ten” (joint sponsorship with incorporated foundation Circle Club) was started.
March 1981	“The 30-year History” was published as a commemorative project of the 30th anniversary.
April 1985	JSSFJ purchase liability insurance.
July 1985	International Exchange Program among The Sea Explorers of Korea was started.
July 1993	International Exchange Program among The Navy League of Canada was started.
September 1994	International Sea Cadet Association was founded in Portsmouth England and JSFFJ became a member.
September 1998	International Sea Cadet Association Conference1998 was held at Yokohama-city in Japan.
August 2001	Ceremony and celebration of the 50th anniversary of JSFFJ was held.
July 2004	Her Imperial Highness Princess Hisako Takamado assumed the honorary president.
October 2011	International Sea Cadet Association Conference1998 was held at Nagoya-city in Japan.
April 2013	JSFFJ was authorized as public interest incorporated association by the Cabinet Office. We made an alteration to “Japan Sea Cadet Federation”(J.S.F) in English.