Re: Noise from dockline passing thru Hawse Pipe
After many years of living aboard our solution to dock line noise is a terry cloth wrap saturated with dish soap. We cut them about 8-10" long and about 6-8" wide (enough to go around the dock line at least twice). I keep an ondeck bottle of cheap soap handy if rain washes it away. We put this wrap over the woven style chafe guard already mentioned. When they are well saturated with soap, a squirt of water over each at night to soak the cloths is all it takes.
Also, we use large diameter nylon dock lines with rubber snubbers (3/4"d for springs, 1"d bow and stern lines). We've been in marinas with wicked surge and even though 1" lines may seem like overkill we've seen them stretch a snubber twice its length and are glad of its extra strength. Plus the larger lines work less and have greater bearing surface which also helps reduce the noise.
We also use similar anti-chafe and noise reduction methods for the 5/8"d nylon anchor bridle which goes in a Y from a devil's claw through both port and starboard hawseholes back to the midship cleats (we need the length for shock absorbing--no rubber snubbers on the bridle).
Just our dos pesos. Your mileage may vary.
1980 C37 Yawl (#22)
lying Lake Union, Seattle