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Sentinel™ Series Boat Crew Dry Suit


SALE $771.10

Retail $2,280.65

Mustang Survival's Sentinel™ Series MSD644 Boat Crew Dry Suit optimizes fit, comfort and functionality which are extremely important, especially when a poorly fitted suit can impede on a mission's efficiency and your safety. Validated by the US Coast Guard, NAVAIR and the SAR Model Manager Office, the Naval Special Warfare, and swift water and ice rescue instructor and trainers, Mustang Survival Sentinel™ Series is designed to be compatible with all types of equipment used in these environments.

The MSD644 is a two layer heavy duty, waterproof and breathable, constant wear boat crew dry suit ideal for more abusive environments like marine construction, marine research or maintaining aids to navigation or just those who want increased abrasion protection and durability. The MSD644 is made specifically for those who work on or around the water where they don't intend to enter the water, but require hypothermia protection in case of accidental immersion.

This innovative 2 layer suit includes an inner Gore-Tex® dry suit layer and a heavy duty Cordura® protective outer layer that is reinforced in key areas with 1050 Denier Ballistic Nylon to guard the entire inner layer from grease, oil, rips and tears. The outer layer can be easily removed for cleaning, repair and replacement when required. Only 8 ounces heavier than Mustang Survival's standard suit, this heavy duty dry suit offers excellent versatility and durability.

Thermal performance of the MSD644, as with any dry suit, is dependent on the type and thickness of the undergarment worn. Mustang Survival's MSL600 Dry Suit Liner is the perfect companion for the MSD644.

MSD644 has been discontinued by Mustang Survival and is replaced by MSD634 Sentinel™ Series Lightweight Boat Crew Dry Suit. Limited stock.

SPECIAL BUY!!! The following sizes were purchased on close out! You save $1,509.55!

Select Quantity
Select Size

Survival Hood MA7348 (add $55.30)
Zipper Lubricant MA2292 (add $54.25)
Men's Dry Suit Liner MSL600 (add $248.30)
Women's Dry Suit Liner MSL601 (add $298.30)
Personal Locator Light MA7099 (add $38.25)

Available Colors

MSD644 sentinel series boat crew dry suitMSD644 sentinel series heavy duty dry suit Orange/Black


MSD644 Sentine Series boat crew dry suit

Mustang Survival Gear brought to you by www.machovec.com


  • Inner layer is made with military grade Gore-Tex® bd6.5 waterproof and breathable dry suit fabric
  • Heavy duty fabric protection outer layer
  • Either layer can be replaced independently
  • Rapid Repair Technology™ using heat activated wrist and neck seals allows for fast field replacement with the use of repair kits available
  • Neoprene and rubber seals are interchangeable at the unit level using Rapid Repair Technology™
  • Rapid Repair CCM™ adjustable neck seal can be worn loose to provide comfort out of the water
  • Multi-position fleece lined storm collar for improved protection and comfort
  • 1050 Ballistic Nylon reinforced neoprene knee pads help prevent injury
  • 1050 Ballistic Nylon reinforced seat and elbows
  • Two-point attachment removable suspender system for an improved fit, mobility and comfort. Internal suspenders included
  • Low profile, light weight, and corrosion resistant TIZIP® waterproof zippers which are easier to operate and require less maintenance than typical brass metal teeth zippers
  • Relief openings for male
  • Duty belt keepers at the waist
  • Integrated universal size Gore-Tex® dry socks - Size XL+ come with jumbo socks
  • Large Cordura® reinforced leg and wrist over cuffs have Velcro® closures for adjustability
  • 62 square inches of SOLAS retro reflective tape provide increased visibility
  • Two chest hand warmer pockets accessible even while wearing a PFD
  • One calf pocket with neoprene survival hood attachment. MA7348 Survival Hood sold separately
  • Two arm pockets with pen holders
  • Two thigh cargo pockets
MSD644 heavy duty boat crew layers
MSD644 sentinel series boat crew dry suit side view
MSD644 heavy duty boat crew back

The Mobility Based Sizing™ platform offers users a semi-custom suit that reduces bulk and increases range of motion.

For accurate measurements, please refer to the measurement instructions provided here: www.mustangsurvival.com/mobility

MSD644 Size Chart

Chest 35" - 38" 37" - 40" 39" - 42" 41" - 44" 43" - 46" 45" - 48" 49" - 52" 53" - 56" n/a n/a
Waist 29" - 32" 31" - 34" 34" - 37" 35" - 38" 37" - 40" 41" - 44" 46" - 49" 51" - 54" n/a n/a
Hips 37" - 40" 38" - 41" 39" - 42" 40" - 43" 41" - 44" 43" - 46" 47" - 50" 53" - 56" n/a n/a
Sleeve 29" - 31" 31" - 33" 33" - 35" 34" - 36" 35" - 37" 36" - 38" 37" - 39" 38" - 40" -1" +1½"
Inseam 28" - 30" 30" - 32" 32" - 34" 33" - 35" 34" - 36" 34" - 36" 34" - 36" 34" - 36" -2" +2"
Torso Hoop 59" - 62" 62" - 65" 65" - 68" 67" - 70" 69" - 72" 71" - 74" 76" - 79" 78" - 81" -2" +3"
Height 60" - 63" 64" - 67" 68" - 71" 69" - 72" 71" - 74" 73" - 76" 75" - 78" 75" - 78" -3" +3½"

Download MSD644 Specification Sheet

The MSD644 Specification Sheet is a pdf file. If you are unable to open it you will need to download the latest FREE version of Adobe Acrobat Reader.

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Download MSD644 Owner Manual

The MSD644 Owner Manual is a pdf file. If you are unable to open it you will need to download the latest FREE version of Adobe Acrobat Reader.

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Mustang Survival Warranty and Repair Information

**Products not eligible for returns include: Re-Arm Kits, Custom Orders, Non Current and Non Stock Products, Discontinued Products and Inflatable PFD's purchased 6 months ago or longer.

The Mustang Survival Warranty and Repair information sheet is a pdf file. If you are unable to open it you will need to download the latest FREE version of Adobe Acrobat Reader.

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2019 Mustang Survival Product Guide
2019 Product Guide

2018 Mustang Survival Product Guide

2017 Mustang Survival Industrial and Commercial Catalog

2017 Mustang Survival Angler Catalog

2016 Mustang Survival Public safety Product Guide

2016 Public Safety Catalog

2016 Mustang Survival Military Product Guide

2016 Military Catalog

2016 Mustang Survival Product Guide

2016 Product Guide

2016 Mustang Survival Range Book

2016 Range Book

For hard copy catalogs contact us at 763-263-9835. To download, right click the image and select "Save Link As".

The catalogs are pdf files. If you are unable to open it you will need to download the latest FREE version of Adobe Acrobat Reader.

Get Adobe PDF reader FREE

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