Originally Posted by Mirage Gecko
How much distance between boats is considered the norm when berthed in a commercial Marina pen that contains two boats.
Are there regulations on this?
I don't discount that an overly anal polity might exist that does have laws or regulations covering the issue, but I only know of 'guidelines', 'standards' and 'recommendations' for the issue.
And those guidelines and standards do not make statements about the distance between boats. Rather the guidelines and standards aim at the width of a double berth.
One relatively anal and bureaucratic polity, which may well be the one in which you happen to find yourself (should you have found yourself) in the present stage of your life cycle, has an "Australian Standard" for the width of a double berth.
Healthy use of the search engine
of your choice should deliver AS 3962 in pdf to you. You might find opportunities to exchange money
for it. But continued use of a search engine
should send you to a Wordpress blog operated by Hamilton Island that will serve it to you freely.
The text for section 3.3.2 Berth widths reads:
"3.3.2 Berth widths
Based on the widest beams of monohull
boats currently being manufactured, the minimum berth widths (the clear width between fingers or piles) are shown in Figure 3.2.
Berth lengths are taken to be the same as the boat length.
General expressions for berth width (b) are as follows:
(a) Double berth: 2 × design maximum vessel beam + 1 m up to 20 m and + 1.5 m above 20 m.
berth: design maximum vessel beam + 1 m up to 20 m and + 1.5 m above 20 m.
vessels can either occupy a double berth, or wider berths can be included, which specifically allow for single
or double multihull
vessels. The beam of a multihull may be up to 0.7L.
These dimensions may need to be increased to allow for larger fenders.
The maximum length of boat for which each berth has been designed should be clearly marked on the marina layout drawing.
For alongside berths, the minimum space between boats should be 0.2L up to 3.0 m. "
Healthy use of a search engine should show you other guidelines, such as '2005 Layout & Design: Guidelines for Marine
Berthing Facilities', California
Department of Boating
and Waterways (California Division of Boating and Waterways
The CDBW guidelines were meant to assist a developer to work out how many berths could be constructed in a certain area. Again, distance between berthed boats is not the focus. The focus is on berth area and berth width. And the CDBW guidelines distinguish between berths for powerboats and berths for sailboats.
To cut a long story short, look for:
"Section B4.3.1 Minimum Width for Double Berths of Same Length
Unless otherwise necessary, a double berth will typically be twice the width of a single berth of the same length."
Then read "B4.2.1 Minimum Single Berth Widths". That section contains the gems:
"Wsbp = 8 ln Lsb - 14 ft" (which translates as: Width of a single berth for power boats = 8 * log natural (Length of a single berth) - 14 feet); and
"Wsbs = 6.5 ln Lsb - 10.5 ft" (which translates as: Width of a single berth for sailboats = 6.5 * log natural (Length of a single berth) - 10.5 feet).
For myself, I agree with Sailmonkey. If I wanted to live in the Democratic People's Republic of Korea
, I'd already be there. I prefer living with guidelines and market freedoms. But that's just me. Your mileage may vary.