A
- Aamstrand Ropes & Twine
- AC Delco
- ACR
- Accon Marine
- Acquah
- Adtech Cass Polymer
- Advance Coatings
- Aerosil
- AFI
- Akzo Nobel
- Alexseal
- American Paint Paddle
- Americana Tire & Wheel
- Ameritool
- Ancor
- Anderson
- Annin Flag
- Aqua-Plas V
- Aqua Signal
- Aqualarm
- Aquabuff
- Armada
- ATC
- Attwood SWIVL-EZE
- Avery Dennison
- Awlgrip
- Awlwood
C
- Cabosil
- Caframo
- Camp
- Cal-June
- Camco
- Canada Metals
- Capt's Choice
- Carborundum
- Carbon Core
- Carver
- Caviness Woodworking
- CE Smith
- Centek Industries
- Cequent
- Champion Spark Plugs
- Chemstar
- Chemtex
- Clean Sheets
- ClearCote
- CMC
- CMP
- Cole Hersee
- Collinite
- Conbraco
- Cook
- Corecell
- Corona Brushes
- Corrosion Block
- Coverguard
- CPD
- CRC
- Crewsaver
S
- S & S Hinge
- SafeSea
- Safe-T-Alert
- SATA
- Scandvik
- Scepter Marine
- Schmitt Ongaro
- Scott
- Scraperite
- Sea Dog
- Sea-Fire
- Seaguard
- SeaStar
- Sea Teak
- SeaTech
- Sealand
- SEM
- Shakespeare
- Shell
- Sherwood
- Shields
- Shurflo
- Shurhold
- Sierra
- Signal Mate
- Sika
- Simple Green
- SM Arnold
- CE Smith
- Snappy Teak
- Sonic
- Soundown
- Southco Marine
- Sperry
- Spray Nine
- Sta-Bil
- Stanadyne
- Standard Fastenings
- Standard Horizon
- Stanpro
- Star Wipers
- Starbrite
- Startron
- Stewart Warner
- Sudbury
- Sunrise
- Super Clean
- Super Hooker
- Sure Bail
- Survitec
- Swan
- Swobbit
- Star Clean
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