[Rhodes22-list] anchoring

Tue Sep 16 11:36:09 EDT 2008

Peter,

You are correct when you assert that tropical storm anchoring is different 
than standard anchoring.  For one thing, most tropical circulations, even if 
they are no longer hurricanes, have a significant change in wind direction 
as the center passes over the area.  This easily dislodges anchors that are 
set to expect wind from a single direction.  Dual anchors (bow and stern) 
are great to hold against a current or a prevailing wind but not necessarily 
against winds that completely change direction.  That is why most storm 
preparations use two bow anchors set at a narrow angle to permit the craft 
to rotate about the anchor point maintaining rules of scope.

Mike
s/v Shanghai'd Summer ('81)
Nissequogue River, NY

From: "Peter Thorn" <pthorn at nc.rr.com>
Sent: Tuesday, September 16, 2008 11:25 AM
> Bill,
>
> In coastal NC when people use "dragging the anchor" it means the anchor 
> has
> broken loose (usually from a mud bottom) from a previously good set.  Most
> often the pull direction changes as a result of changing wind or current.
> Tropical storm Hannah, a non-event compared to Ike, brought 60 mph winds 
> to
> the creek and this caused two boats (out of 75-100) to drag their anchors
> and wash into the marsh.   I think you are discussing lunch anchoring.
>
> Regards,
>
> PT
>
> -----Original Message-----
> From: rhodes22-list-bounces at rhodes22.org
> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Bill Effros
> Sent: Tuesday, September 16, 2008 10:59 AM
> To: The Rhodes 22 Email List
> Subject: Re: [Rhodes22-list] anchoring
>
> Ben,
>
> In order to set the anchor you must put tension on it.  This pulls the
> rode taut.  When there is no wind or current, the rode will lie flat on
> the bottom, or float to the surface if it is a floating rode.  But it is
> not holding the boat in place.
>
> What most people call "dragging the anchor" is usually "dragging the
> chain".  If you fail to set your anchor -- which you will fail to set
> properly if you never draw the rode taut -- you can drag the chain all
> over the place, without ever properly setting the anchor.  If you draw
> the rode taut and properly set the anchor it just won't drag.
>
> A very small anchor can be used to hold a very large boat in place if
> the anchor is properly set.  It is much easier to set an anchor with an
> all rope rode.  The chain portion of the rode does not change the angle
> of pull.
>
> Bill Effros
>
>
>
>
>
> ben wrote:
>> << The chain portion of the rode does not change the angle of pull.>>
>>
>> Of course it does.  Unless your boat is being pushed by a very strong 
>> wind
>> or current, and assuming you've let out enough rode, the chain is lying
> very
>> close to the bottom.  The entire rode arcs up to the boat in a 
>> parabola --
>> not in a taut straight line.
>>
>> If you charter in the Caribbean, it's easy to see first hand in the clear
>> water.  \\
>>
>> Ben S
>> Velvet Elvis
>>
>>
>> -----Original Message-----
>> From: rhodes22-list-bounces at rhodes22.org
>> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Bill Effros
>> Sent: Tuesday, September 16, 2008 8:53 AM
>> To: The Rhodes 22 Email List
>> Subject: Re: [Rhodes22-list] anchoring
>>
>> Joe,
>>
>> Don't know if you saw my rants regarding Practical Sailor and anchors.
>> In a nutshell, I don't think they know what they are talking about.
>>
>> They test anchors using a winch mounted on the shore and dragging
>> anchors through the same loosened mud over and over.  This is not the
>> way an anchor should be set.  The tests favor the anchors first pulled
>> through the mud, and heavy plow type anchors pulled through
>> subsequently.  All the anchors were not the same weight.
>>
>> The chain portion of the rode does not change the angle of pull.
>> Whether the rode is rope or chain, it is pulled taut -- the angle is
>> determined by other factors you set, primarily the length of the rode
>> between the boat and the anchor.
>>
>> Bill Effros
>>
>>
>>
>> Joe Babb wrote:
>>
>>> Elle,
>>> Sounds like Slim's got the answer.   He has experience with the Delta
>>> and says it is good in weeds.  As far as anchor rode goes, I'm gonna
>>> stick with a short length of chain between anchor and nylon because the
>>> chain helps hold the anchor at a good angle to dig in.  Lots of tests by
>>> folks like Practical Sailor magazine back that up.  That's usually what
>>> a kellet is used for if you have to anchor with short scope, to hold the
>>> anchor at a better angle.
>>> Best,
>>> Joe
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