I catch up with David Hanton from Bradford Marine and get deep and technical about protecting whats under your waterline. We dive into the typical issues with hull maintenance, osmosis in fibreglass and what causes it, how to know if it's a big vs small problem, how to prevent and repair it and we talk about how significant the damage and repair bill can be. David shares examples of shortsighted shortcuts boat owners and tradesmen take and the extra problems they cause. We talk about the product choices for owners when it comes to anti-foul paint and the differences between budget and premium and how the life expectancies differ, the paint thats better suited to warm and cold climates and racing versus cruising application options. We discuss some of the ugly things that can happen to poorly maintained hulls and the construction materials to avoid when buying a second hand yacht. We finish up on rudders and keels and the warning signs you should pay attention to. Visit Ocean Sailing Podcast for offshore sailing opportunities and podcast extras and follow us on Facebook.