RickB wrote:so a boat rapidly approaching a dock is a hazard to itself and all the boats around it.
Depends on your definition of "rapidly."* Around here, virtually every time we've watched a boat get in trouble docking at the fuel dock or even in their own slip, it's been because they got too slow without enough rudder authority and the wind, current. or both, got hold of them and moved them to where they didn't want to be.* At that point, adding power in an attempt to get rudder authority almost always resulted in them making the situation worse.
Yes, dead slow or stopped can certainly ensure staying out of trouble if there are no other forces at work and you just sit there.* But in our marina, anyway, where 10 to 20 knot* crosswinds are the norm to most docking situations, not the exception, and in many of the fairways there can be up to a two-knot current running past the entrance to the slips in one direction or another depending on the state of the tide, being timid with the power and the speed can be a sure way to get pinned against a piling, or worse, another boat.
I would not call the speed at which most boaters in this marina who know what they're doing--- particularly the single-engine and sailboat skippers---- use to maneuver their boats into or out of their slips "rapid" by any means.* But it's not an idle speed either.* Perhaps "smartly" is a more accurate term.
As to backing in, most boats in our 3,000 boat marina go bow in but a fair number of powerboaters prefer to back in (I don't know that I've ever seen a sailboat stern-first in a slip here unless it was being worked on).* We go bow-in to our slip, partly because it's easier, partly so we can take advantage of our permanent spring line to pin the boat against our finger float even in a high crosswind, and partly because we want to keep the boat's stern into the prevailing weather.* In this neck of the woods the slips and their finger floats are always at least the length of the boat if not a bit more.* So ease of boarding is not an issue whether you back in or go bow-in.*
Backing a twin is dead easy--- it's virtually like driving a car since you're steering the end that's going "forward."* If confronted with tight quarters in some of the marinas up north that can require us to move down between two long rows of moored boats with only a few feet of clearance on each side to reach the available dock space, we will often flip the boat around out in the fairway and then back down the length of the slot.* This can be a situation where it's better to be able to steer the end of the boat that's leading the way down the slot rather than the trailing end because steering the trailing end could swing that end into one of the boats you're squeezing past.* Depending on the wind and current, running backwards (with a twin) down between the boats can sometimes be easier and more accurate than going forward.* Other times it's not.*
It's the kind of situation where, if one had a single, a bow thruster would make life a whole lot easier since you could use it to guide the bow without sliding the stern to one side or the other.
-- Edited by Marin on Wednesday 7th of July 2010 01:39:19 AM