A few months back I was in Ft Lauderdale looking at used cats, had the opportunity to take a look at the L420 & 440. Must say I was impressed by the layout. There has been a big change in cat designs in the last 15 years. At 6'4" with broad shoulders (and waist), the older cats just aren't the same - even the big cats.
I only got a short time to look at the L420 as it was a boat in for warranty work so the owners and techs were scrambling about. One thing I did notice was that the generator
wasn't as quiet as I expected. When they opened the hatch
in the cockpit
I could hear that part of the noise
was from panel vibration. Sure enough, I put my hand on different parts
of the gen encosure and there was lots of vibration and rattling. This seems like something that could be easily be solved
- there are lots of adhesive
that are made for reducing this kind of noise
. Similarly, you could feel the vibration throughout the cockpit
. Most generators run at a single RPM
, so instead of the typical wide bandwidth engine
mounts used on diesels there are mounts/dampers that are tuned to a narrow freq band so that they have much more vibration isolation.
Yes it was quiet, but it wasn't silent (or vibration free through the hull) - I've been on well built mono's that were similarly quiet under power. Are these options that perhaps these owners didn't buy? Has anyone added additional sound/vibration dampening? or upgraded mounts?
I'm glad the G2 is providing improvement, I prefer the helm
on the 420 v 440 but here in So Cal wind
averages ~9-10Kn so there is lots of motorsailing and down right motoring.