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

  • Toll-Free: (800) 854-0195
  • Phone: (970) 238-8415
  • Fax: (970) 999-8846

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

(602) 693-0839

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?

2023 Holiday Office Closures

Our office will be closed on the below dates, however, you can learn more about our program via our 24-hour chatbot and online help center.

  • Monday, January 16, 2023 – Martin Luther King Jr. Day
  • Monday, May 29, 2023 – Memorial Day
  • Monday, June 19, 2023 – Juneteenth
  • Tuesday, June 20, 2023 – Friday, June 23, 2023 Summer Holiday Week
  • Tuesday, July 4, 2023 – Independence Holiday
  • Monday, September 4, 2023 – Labor Day
  • Thursday, November 23, 2023 – Thanksgiving
  • Friday, November 24, 2023 – Thanksgiving Holiday
  • Monday, December 25, 2023 – Winter Holiday

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 semesterseadev.wpengine.com 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.