Underwater
For hull and underwater areas exposed to constant immersion, this three-coat system pairs a surface-tolerant epoxy primer with a tie coat and a self-polishing antifouling topcoat, protecting against both corrosion and fouling in one system.
Coat Layers
Three coats, each doing a different job.
What’s Included
Underwater System
Epoxy primer + tie coat + antifouling topcoat
Before you start
Hull work is done in dry dock. Wash off fouling and salts, then remove loose paint and rust so the primer bonds to clean, dry steel. Ask us about the right preparation for your hull.

Jotamastic 85
Seals and protects the hull surface.
View product →Thinner: Jotun Thinner 17
Jotun Thinner 17A solvent-based thinner formulated to improve flow for Jotamastic 85 and Safeguard Universal ES, and to clean tools and equipment.

Safeguard Universal ES
Bridges the primer and the antifouling coat.
View product →Thinner: Jotun Thinner 17
Jotun Thinner 17A solvent-based thinner formulated to improve flow for Jotamastic 85 and Safeguard Universal ES, and to clean tools and equipment.

SeaForce Active
Protects against fouling and drag.
View product →Thinner: Jotun Thinner 7
Jotun Thinner 7A solvent-based thinner formulated to improve flow for SeaForce Active, and to clean tools and equipment.
Other Systems
Working on something else?
Compare with our other ready-made systems.
Ready to quote this system?
Tell us the area, the structure and where it’s going, and we’ll work out quantities and send a quote.
Where It’s Been Used
A look at underwater and hull projects finished with this system. Click a photo to enlarge.
Outside hull
Full underwater system
Dry dock hull work
Primer to antifouling application
Water ballast tank
Immersed steel protection
Offshore splash zone
Corrosion and fouling protection
