Welcome to UDI!

We are Boston's oldest dive shop, with 50 years of experience in SDI and ERDI training, specializing in 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!

Courses

Get certified to dive in open water 

and trained in 

advanced specialties!

DIVE TRIPS

Join us for local fun dives, distance trips, and more! 

Equipment

We've got the gear you need to dive comfortably in warm or cold water, available for rent or purchase! 

Servicing

We service regulators, BCs, masks, tanks, wetsuits, drysuits, and more!

Public Safety

We keep Fire & Police Dept equipment up to date, do SCBA training and compressor servicing!

Schedule

Check out the dates for our classes, open water dives, events, and sales!

News & Events

Stay up to date on our community news and events!