Transcript Powerpoint on Anchoring - Beth and Evans Home Page

Anchoring
By Evans Starzinger
Monday, July 06, 2015
Objective: to sleep well at night
½%
Hopeless
4½%
Black Art
95%
Dead Easy
© 2013 Evans Starzinger
Your standard practice should be
good up to hurricane force
Especially for high latitude cruising
© 2013 Evans Starzinger
© 2013 Evans Starzinger
But also not be too much work for
“normal” days
© 2013 Evans Starzinger
Dead Easy 95% of the time
1. Pick your spot
 2. Drop a BIG anchor
 3. Let out plenty of scope
 4. Set the anchor

Any one of these done well will usually make you
secure, all 4 are quadruple redundancy
© 2013 Evans Starzinger
Dead Easy 95% of the time
1. Pick your spot
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1. Tide Level
2. Swinging room (eye ball, radar, or laser)
3. Protection (wave patterns)
4. Bottom composition (water color and chain
feel)
5. Exit at night
© 2013 Evans Starzinger
Water color & wave patterns
© 2013 Evans Starzinger
Water color & wave patterns
© 2013 Evans Starzinger
Water color & wave patterns
© 2013 Evans Starzinger
Dead Easy 95% of the time
2. Drop one BIG anchor
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BIG – we like going up 2 sizes (1kg/ft LOA)
Almost any design . . . But . . .
© 2013 Evans Starzinger
Anchor testing in ‘difficult’ bottom
© 2013 Evans Starzinger
Almost any design . . . But . . .
Two fundamentally different bottom types:
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Penetrating (typical sand and mud)
 Anchor tests focus on this almost exclusively
 Almost any decent design will work OK
 But we prefer to avoid CQRs & Roll Bars
Non-penetrating (rock & coral & extremely hard
sand, & very thick kelp)
 Only the Bruce design is excellent (with the
fisherman ok)
World cruising bottoms split about 50/50
© 2013 Evans Starzinger
Dead Easy 95% of the time
3. Let out plenty of scope
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As much as you have room for, in a storm
Down to 3:1 in a tight cove with decent forecast
(tricky . . . . Black Arts) Down to 2:1 with a
Bruce with a calm forecast and good bottom
Put on snubber (back-up snubber in storms)
© 2013 Evans Starzinger
Chain Marks
paint, zip ties & webbing
Soft Shackle chain attachment
© 2013 Evans Starzinger
Snubber
Any piece of nylon will do . . . But:
© 2013 Evans Starzinger
Dead Easy 95% of the time
4. Set the anchor
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Drop it and drift back
Let it settle a bit
Start with slow reverse revs and build up
Go to quite high revs if expecting a storm
Look sideways at a transit
© 2013 Evans Starzinger
Black Arts
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Protection in high latitudes
Scouting ahead with the dinghy and a portable
depth sounder
Anchor alarms
Stern/shore ties
Tandem anchors
Kedge anchors
Trip lines
Picking your spot in a crowded anchorage
Mooring buoys without pick-up lines
© 2013 Evans Starzinger
Protection in high latitudes: Trees
© 2013 Evans Starzinger
Protection in high latitudes
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Look for biggest straightest trees
Mouth of small creeks have good mud
Surface kelp can indicate shoals and rocks
Avoid williwaws . . . being directly down
slope from acceleration funnels and glaciers
© 2013 Evans Starzinger
Portable Depth Sounder
© 2013 Evans Starzinger
Anchor Alarms
You can usually feel dragging – boat more beam on
Mostly we use a plotter with 1 sec position points
to confirm if we are dragging
Shore ties
© 2013 Evans Starzinger
Tied 4 square with
White water outside cove
© 2013 Evans Starzinger
Shore Ties:
© 2013 Evans Starzinger
Shore Ties
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Floating line
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Minimum two x 100m, but preferably four
Normal procedure:
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Dinghy down alongside, with outboard running
Start backing boat in
Drop anchor while backing
Keep in reverse when scope is out
Hop in dinghy and run windward line to shore
© 2013 Evans Starzinger
Shore Line bags:
Phifertex Vinyl Mesh
36” tall x 12” dia
Better than duffle shape
300’ of ¾’ line or
600’ of ½” line
Wire sewn into opening
to hold open
© 2013 Evans Starzinger
© 2013 Evans Starzinger
Getting dinghy ready for shore tie
© 2013 Evans Starzinger
Need:
Dinghy anchor
High boots
Tie to trees bigger than
your arm
Possible use for rock
climbing hardware (pitons)
and mooring screws
© 2013 Evans Starzinger
Tie long loop, can be untied from dinghy
© 2013 Evans Starzinger
Tandem anchoring
Graphics Source: Rocna website
© 2013 Evans Starzinger
Tandem anchoring
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Bigger anchor used as primary, smaller as
Tandem
Tandem anchor shackled in front of primary
anchor on a boat length (or a bit less) of chain
Floating line (a couple meter’s longer than the
chain) attached to shank of tandem anchor and
clipped to crown of primary
To recover, pull primary anchor into roller,
unclip floating line and use to pull tandem into
second roller (or over bow)
© 2013 Evans Starzinger
Shackle attachment point
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Some ‘expert’ disagreement on where to
attach tandem chain to primary anchor:
shank vs. crown.
My take . . . .
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Higher holding potential if to crown location
Some anchors (CQR) don’t have strong enough
shackle holes in crown
Shank location does work
© 2013 Evans Starzinger
Floating pick-up line
© 2013 Evans Starzinger
Kedge anchors
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A light danforth/fortress you can dinghy out
easily and quickly.
We have used:
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Off the beam to hold hull off nasty rebar fuel
dock
As the quickest anchor to get far far out when
aground
As stern anchor to point bow into swell
As the ‘tandem’ anchor
Trip lines
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Mostly not necessary and added work and
complication
But very occasionally a life saver – South
Georgia and Easter Island
Net net . . . . We don’t use very often, but we
do if known big hazards on the bottom (like
an old whaling harbor) where it will be too
deep or cold to dive
Crowded Anchorage
© 2013 Evans Starzinger
© 2013 Evans Starzinger
© 2013 Evans Starzinger
Crowded anchorages
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Boats swing together if to the same scope
You really only ‘need’ about 30’ of separation
Three options:
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Come in and drop your hook just off the quarter,
right in line with the transom of the boat in front
Drop it abeam, and exactly half way between two
boats
Shore tie in a corner
© 2013 Evans Starzinger
Mooring buoy without pickup line
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Swim platform boat that backs well – back
up to buoy
Or
Photo Source: http://www.circumnavigation-uki.co.uk/tips3-buoys.htm
ALWAYS HAVE A “PLAN B”
© 2013 Evans Starzinger
Sometimes the trick is simply to get
safely into the anchorage
© 2013 Evans Starzinger
Objective: to sleep well at night
½%
Hopeless
4½%
Black Art
Either move or
Keep an anchor watch
Master at least
8 black arts
95%
Dead Easy
Follow the 4 step program
© 2013 Evans Starzinger