While we are discussing anchor lights the other post, I thought I'd throw this one in
I'm sitting on the hook at my favourite spot in Sydney Harbour. Went to turn the anchor light on at dusk, but nothing.
Strange, it worked last weekend for the four nights I was out.
Every other switch on the panel works fine. Checked the fuse, it's ok.
I have no idea what it could be.
Any suggestions?

Thanks guys