We had hoped to write about our entertainment system upgrade by now but the install has gone a little slower than expected. Hopefully next week we will tell you all about Kevin's new pride and joy. A while back we wrote about our cute little alcohol burning fireplace that kept us toasty through the very cold months. We've had a bunch of people asking whether we are getting enough oxygen inside a boat since it's wrapped in glorified Saran. The fully fueled fireplace burns about three hours and we usually only burn once in a 24 hour period. We have not noticed any issues with oxygen on board this winter. We were worried about other gasses like too much CO or CO2. When we bought Cygnet in May 2014 there were three hardwired CO detectors that we believe to be original to the boat. A commenter on our blog asked if we were using any other types of CO detectors since the lifespan is about 5 years on these. It's something we thought about but had not worked on a fix.