Contact Semester at Sea
If you don’t see what you’re looking for on our website, don’t hesitate to send us an e-mail or give us a call.
Business Hours
Monday – Friday
8:00 a.m. – 5:00 p.m. Mountain Time
- For prospective students and Lifelong Learners, please call: (970) 238-8415
- For enrolled participants and all other inquiries, please call: (970) 633-1491
- Fax: (970) 999-8846
2025 Summer Hours
The ISE | Semester at Sea office will close at 12 p.m. on Fridays during June 2025 and July 2025.
Mailing Addresses:
Physical Address:
Semester at Sea
2243 Centre Ave.
Suite 300
Fort Collins, CO 80526
Mailing Address:
Semester at Sea
Colorado State University
Campus Delivery 1587
Fort Collins, CO 80523-1587
Check Payment Mailing Address:
Institute for Shipboard Education
P.O. Box 842945
Dallas, TX 75284-2945
24-Hour Emergency Answering Service
Please note — this phone number is only listed and active immediately before, during, and after active Semester at Sea voyages. This line is only to be used for emergencies that cannot wait until normal business hours of M-F 8:00 a.m. – 5:00 p.m. Mountain time. If it is not an emergency please contact (800) 854 – 0195 or (970) 238 – 8415.
Contact Student Admissions
Not a student?
- Lifelong Learning Program Inquiry
- Contact Advancement/Alumni Affairs
- Contact Human Resources
- Contact Marketing and Public Affairs
- Submit a ticket for IT Tech Support
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2025 Holiday Office Closures
- Wednesday, January 1, 2025 – New Year’s Day
- Monday, January 20, 2025 – Martin Luther King Jr. Day
- Monday, May 26, 2025 – Memorial Day
- Monday, June 16, 2025 – Friday, June 20, 2025 – Summer Holiday Week
- Thursday, June 19, 2025 – Juneteenth
- Friday, July 4, 2025 – Independence Holiday
- Monday, September 1, 2025 – Labor Day
- Monday, October 13, 2025 – Indigenous Peoples’ Day
- Thursday, November 27, 2025 – Friday, November 28, 2025 – Thanksgiving Holiday
- Thursday, December 25, 2025 – Winter Holiday
- Wednesday, December 31, 2025 – New Year’s Eve
Privacy Policy
The Institute for Shipboard Education (together with its parent, affiliates, successors and assigns, “ISE” or “we”) respects the privacy of visitors to the semesteratsea.org website (the “Site”). ISE collects and processes certain information from students, staff, faculty, and other applicants and participants of the Semester at Sea program. Our Privacy Policy is designed to assist you in understanding how we collect, use, and safeguard the personal information you provide to us and to assist you in making informed decisions when using the Site. This Privacy Policy only covers information collected at the Site and does not cover any information collected at any other website or offline by ISE (unless specifically stated).
Fundraising Registrations
As an independent, 501(c)(3) non-profit educational organization, Semester at Sea is completely dependent upon enrollment revenues and philanthropic gifts from our alumni, parents, friends, and corporate sponsors.
