Mariners Inn is a nonprofit organization that offers lodging option for homeless men. The facility operates a variety of substance abuse prevention programs. It also provides a selection of family counseling and support services. The facility has been in operation since 1925. Mariners Inn provides classes on highway safety. The facility operates Transitional Housing and outpatient programs. In addition, it offers online registration options. The facility accepts donations from individuals and institutions. It is licensed as a residential and outpatient treatment center through the Office of Drug Control Policy, a part of the Michigan Department of Community Health. Mariners Inn is accredited by the Commission on Accreditation of Rehabilitation Facilities (CARF).