M.A.I.S.I., LLC carries the full line of OTS, SEAC and XS Scuba gear and equipment for all your diving needs.

M.A.I.S.I., LLC provides certification courses from Basic Scuba through Instructor Trainer. We also offer FFM training.

M.A.I.S.I., LLC employs fully insured, certified instructors for classroom, pool sessions & open water training.

M.A.I.S.I., LLC offers air, Nitrox, Trimix, oxygen, helium, paint ball, and SCBA fills.  Our shop also offers tank inspections, hydros, and equipment repair.

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The Gallery

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M.A.I.S.I. Photos

A collection of photos of students in training and assorted dive destinations!

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MetroWest Dive Club

Metro West Dive Club member's photos of local dive spots!

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Video Library 

Video Library of Equipment, Training and Promotional Videos!

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EastCoast Dive Club

Photos from the East Coast Dive Club!

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