- Accidental Jibe Preventer
- Adding a Dedicated Starting Battery
- Adding a Third Fresh Water Tank
- Adding Backstay Adjuster
- Anchor Washdown, How to Connect
- Anchor Washdown, Upgrade
- C320 Snap Davit Installation
- Drink Holders
- Filtering Potable Water
- How to Convert the C320 Table into a Round One
- Improved Boarding Ladder
- Improving the C320 Charging System – Approach 1
- Improving the C320 Charging System – Approach 2
- Installing a Questus Backstay Radar Mount and JRC Radar
- Larger Holding Tank, Upgrade
- LED Lighting Addition
- Lighting Upgrade for Early Catalina 320s – Approach 1
- Lighting Upgrade for Early Catalina 320s – Approach 2
- Modifying the AFI Teak Cockpit Table
- Modifying the Maxwell VC500 Anchor Windlass
- Reducing Icebox Volume
- Refrigerator Top Insulation Tip
- Relocating the Fresh Water Tank Valves
- Routing the Ductwork for a Reverse Cycle AC Upgrade
- Second Bilge Pump Switch
- Stern Mounted Radar Mast
- Trash Can Alternatives
- Water/Holding Tank Monitoring System