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Welcome to UDI!
We are Boston's oldest dive shop, with over 50 years of experience in SDI and ERDI training, specializing in education, Public Safety equipment supply & servicing, and drysuit/wetsuit repair & tailoring!

Our Team
Learn more about our awesome staff and dive instructors!

Dive Sites
The best places to dive around Massachusetts!
Contact Us!
617-666-0410
59 Washington St
Somerville MA 02144
Mon-Tue & Thu
10am - 2pm
Friday - 10 am - 4pm
Saturday 10 am - 4pm
(Closed on Wednesday and Sunday)
Closed President's Day
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