I installed a propane fueled, bulkhead mounted unit in my main saloon and it works very well. It not only looks great but it provides a certain homey charm to the main living area. If your vessel is not equipped with propane, fear not, diesel or solid fueled units are available too. Whatever your fuel choice, a cabin heater adds that special little touch of romance to your vessel. Check out the cabin heater selection from Force 10 and Dickinson.
Clean air is always refreshing.
When hatches cannot be opened due to rain or sea spray, solar powered vents are just the ticket. They are easy to install on deck or through a hatch lid and no additional wiring is required for their operation. They work whether you are aboard or not, use no shipboard power and help to prevent foul odors and mildew. They are very quiet and can be easily modified to induct or extract air. Check out Nicro Marine's selection.