Vässarö was long used for farming but was bought in 1936 by sea captain Ragnar Westin, who planned to use it for his retirement.

Since 2007, all duties at the national level within SMU have been transferred to the collaborative organization equmenia.

The members were distributed into 545 local Scout groups (kårer), which in turn are assembled in seven districts.

These districts were shared with SMU's mother denomination, the Mission Covenant Church of Sweden.

Since SMU-Scout was an integral part of equmenia, the board of trustees in equmenia delegated the Scouting issues to a Scout Committee to deal with other issues.

Since 2012, SMU-Scout has been incorporated into Scouterna, Sweden's national Scouting and Guiding organisation.

The organization had a campsite called Skräddartorp, Ludvika, which accommodated approximately 1,000 participants.

Scouternas almanacka was a wall almanac sold annually by KFUK-KFUMs Scoutförbund, starting in 1945.