Your manufacturer probably measured length on deck but marinas measure
length overall including bowsprits/pulpits/anchor platforms.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

wrote in message
oups.com...
At the end of my aborted cruise, I left my boat at Cortez Cove Marina
near Bradenton, FL. As my boat is a 28' S2 with a specified length of
8.5 meters which actually comes out to less than 28', I paid
$10/ft/month or $280/month. Now, the marina says THEY have measured it
to be 30' and want to charge me $300/month. Very strange. I wonder if
I leave it there longer will it continue to grow in length and value at
a faster rate than the increased slip fees.
I am halfway inclined to simply bring her back to N. Florida where I
get a slip for less than half that much and I do not have to put up
with such nonsense.