Anchor Cover
Anchor Cover
 |
US $1.00
Anchoring..The Basics
Anchoring, is one of the most basic skills a seaman has to come to grips with. This article covers the basics and the theory, those with experience may wish to skip to other articles on the subject. Anchoring is an art, combined with a bit of science.
In most simple terms anchoring involves attaching your boat to the seabed via an anchor and a chain or rope. The object is that the boat stays put and doesn't go drifting off (within the limits governed by the length of the chain or rope).
All anchors of whichever kind work in the same way... they are lowered to the seabed on their chain, and once they are touching the bottom more and more chain is paid out as the boat drifts backwards either driven by the wind and or tide.
At a certain stage chain is ceased to be paid out and then made fast. The boat is now moving backwards dragging in front of it the chain and the anchor at the bitter end. Because the chain is heavy it tends to drop straight down vertically and then run along the seabed horizontally towards the anchor.
The anchor is designed in such a way that when it is dragged along the seabed horizontally it tries to dig itself in like a spade. Depending on what the bottom consists of it will either dig itself in, often until it is completely and utterly buried, or in the case of a rocky bottom will snag on a rock or crevice.
At this stage the boat will stop moving backwards, and the chain (or chain and rope combination) will go taut.... sometimes bar taut. Once the momentum of the boat is halted the chain slackens a bit, and the boat will happily lay to its anchor.
In normal conditions the weight of the chain will ensure that there is always a horizontal pull on the anchor itself, so that the more strain that comes on the more the anchor will tend to dig in.
It is part of the seamans art to know exactly how much chain to pay out, and this can vary depending on the depth, the nature of the seabed, and the weather, tide, and sea conditions in the anchorage.
The object is to make sure that no matter what happens the anchor always has a horizontal, as opposed to a vertical pull on it.
When the tide turns, or the wind pipes up from another direction, the boat tries to drift off in that way. It drags the chain in front of it, and the strain on the anchor changes direction. If it is well dug in it may well stay put, on the other hand it may be dragged out by the change of direction, and then it has to reset in the same manner it was first deployed in... but in a new direction.
Thus whenever an anchor is subject to the strain coming on it from a completely new direction, it is vulnerable to breaking out the seabed, and having to reset itself again.
This means if you secure yourself with only one anchor, caution is warranted at the turn of the tide, or significant wind shift.
If you imagine the anchor as being the central point, and the boat swinging round it 360° on its chain, this is the area the anchor boat can move in and it is called the swinging circle. The length of chain or chain and rope paid out is called the scope, and the chain (or rope/chain combination) paid out is called the anchor rode.
When it is time to weigh anchor, the chain is pulled in (which draws the boat to a point somewhere above the anchor), and the anchor is " broken out". Anchors break out when the direction of pull becomes vertical as opposed to horizontal. The chain and the anchor are got back onboard, and off you go.
This is anchoring explained in its most basic terms, and it's the same whether you are anchoring the dinghy or battleship. A horizontal pull along the seabed digs in the anchor, a vertical pull on the chain dislodges the anchor. A complete change of direction in the pull can dislodge the anchor, and normally it will reset itself... providing the pull on it is horizontal.
The most important thing for beginners to understand is that anchoring is not a the same as mooring, the boat can wander around on its scope within its swinging circle. When the anchor breaks out and resets itself the boat can move off station, the distance depending on how long it takes the anchor to dig in again.
Therefore when choosing a spot to anchor, you will be looking for a place with no big waves, as apart from making things extremely uncomfortable they can jerk out the anchor. You will be looking for a place where the tides are not too fierce, out of the main tidal stream. You will be looking for a place where you have room to swing. And you will be looking for a place with a suitable seabed where your anchor can dig in properly.
You will probably avoid anchoring over rock, as your anchoring then depends on snagging an outcrop. With the turn of tide or wind in the anchor will have to find another outcrop to snag. Finally the anchor can get well and truly trapped in crevices, and you won't be able to raise it.
Mud, providing it's not too gloopy is good, sand is good providing it is free of weed (which can interfere with the anchor digging in).
You will pay out the correct amount of scope to allow a horizontal pull on the anchor... for the moment let's just say 3 to 5 times the depth of the water.. that's a good starting point.
You will watch your anchor dig in, and once it has bitten, you may well use a bit of reverse to dig in some more.
Once you are safely anchored, you will pay particular attention at the turn of the tide or wind shift, as this is when you could start dragging.
Once you've done all this to your satisfaction, watch and see if some idiot doesn't come and anchor right on top of you !
That's it for this primer article, sounds simple but you can spend many, many, years learning more and more about the subject as you go along, and more articles in this series cover other aspects of the art of anchoring.
This article was first published in July 2009 here :
http://www.visitmyharbour.com/articles/article.asp?arturn=1425
http://www.visitmyharbour.com is a pilotage guide to 120+ ports, harbours, estuaries, rivers and inlets around the coasts of the UK. It uses fully licenced large scale charts online, and has comprehensive information on anchorages, moorings and marinas in the UK.
About the Author
Steve Bryant has over 22 years sailing experience, 30,000 sea miles, and has spent over 1000 nights at anchor. He has very knowledge of the UK coastal waters, and the Mediterranean. He is currently involved with the UK pilotage website http://www.visitmyharbour.com
|
|
Brass Safety Cover Anchor Collar $2.99 Brass Safety Cover Anchor CollarHides chipped concrete around drill holes |
|
|
Anchor $4.99 Anchor |
|
|
Floor Anchor with Brass Cover Plate $298.5 Brass cover plate and anchor work independently to allow for installation into floating wood floors. |
|
|
Meyco Safety Cover Pop-up Brass Anchor $7.99 Meyco Pop-Up Brass AnchorSolid Brass, sits in decking to anchor cover, fits into 3/4" hole |
|
|
Anchor 2038cc Cable Cover. Each $64.63 Manufacturer: Anchor Brand. Each. Sewn with Kevlar Width = 3 in Length = 20 ft Size Group = Small Closure Type = Snap Temp. Range = 200.0 F [Max] Material = Leather Applications = TIG Resistance = Heat Customers also search for: Discount Anchor 2038cc C |
|
|
Anchor 2048cc Cable Cover. Each $75.33 Manufacturer: Anchor Brand. Each. Sewn with Kevlar Width = 4 in Length = 20 ft Size Group = Large Closure Type = Snap Temp. Range = 200.0 F [Max] Material = Leather Applications = MIG Resistance = Heat Customers also search for: Discount Anchor 2048cc C |
|
|
Anchor Hocking 1/2 Gallon Heritage Jar with Cover. Case of 2 $27.23 Manufacturer: Anchor Hocking. Case of 2. Customers also search for: Discount Anchor Hocking 1/2 Gallon Heritage Jar with Cover, Buy Anchor Hocking 1/2 Gallon Heritage Jar with Cover, Wholesale Anchor Hocking 1/2 Gallon Heritage Jar with Cover, 85545R, Gla |
|
|
Anchor Hocking Sugar/Cover Presence. Case of 4 $17.3 Sugar/Cover Presence . Manufacturer: Anchor Hocking. Case of 4. Customers also search for: Sugar Cover Presence - sugar holders and pourers sugar holder and pourer Acces. Sugar Holders & Pourers |
|
|
Meyco Safety Cover Screw-Type Brass Anchor $5.99 Meyco Screw-Type Brass AnchorThese solid brass screw-type anchors sit in the pools perimeter decking, and are used to anchor the Safety Cover for the off-season. Anchor fits a 3/4" hole. Call us for more information on this product. |
|
|
Anchor Q-19 22ft Tig Cable Cover. Each $31.57 Manufacturer: Anchor Brand. Each. Width = 4 in Length = 22 ft Size Group = Large Closure Type = Snap Temp. Range = 1000.0 F [Max] Material = Leather Applications = MIG Resistance = Heat Customers also search for: Discount Anchor Q-19 22ft Tig Cable Cover |
|
|
Anchor Hocking Gallon Jar with Cover. Each $14.98 Manufacturer: Anchor Hocking. Each. Anchor Hocking is a leading manufacturer of high quality glass products such as this Heritage Hill half gallon glass jar with glass lid. This jar is perfect for accenting and organizing. The uses for this glass jar are |
|
|
Brass Screw-Type Anchor w/ Threaded Insert $6.99 Brass Screw-Type Anchor with Threaded InsertSolid Brass, sits in decking to anchor cover, fits into 3/4" hole |
|
|
Game Base Floor Anchor with Brass Cover Plate For Floating Floor: SP $279.2 Brass cover plate and anchor work independently to allow for installation into floating wood floors. |
|
|
Anchor Pcg-250 2 1/2" Gauge Cover. Each $1.76 Manufacturer: Anchor Brand. Each. Replacement gauge covers crystals One-piece threaded polycarbonate Diameter = 2 1/2 in Case Material = Polycarbonate Color = Clear Type = Gauge Cover Customers also search for: Discount Anchor Pcg-250 2 1/2" Gauge Cover |
|
|
Floor Anchor $148.5 Billet steel body gives 9000 lb. pull-out strength intended for all floor applications except floating wood floors3 1/4" chrome cover |
|
|
Anchor Brand 1002038CC Anchor 2038Cc Cable Cover $91.42 Sewn with Kevlar. Width: 3 in. Length: 20 ft. Size Group: Small. Closure Type: Snap. Temp. Range: 200.0 F [Max]. Material: Leather. Applications: TIG. Resistance: Heat. |
|
|
Anchor Brand 1001048CC Anchor 1048Cc Cable Cover $55.72 Sewn with Kevlar. Width: 4 in. Length: 10 ft. Size Group: Large. Closure Type: Snap. Temp. Range: 200.0 F [Max]. Material: Leather. Applications: MIG. Resistance: Heat. |
|
|
Cover Sports Usa 1150148 Field Cover Anchor Stakes - 9 Inch $26.8 Heavy Duty Baseball-Soft Field Equipment. Size: 9". Anchor Stakes. Committed to bring you the best products on the market. Satisfaction ensured. |
|
|
Cover Sports Usa 1150148 Field Cover Anchor Stakes 9 Inch $39.99 Heavy Duty BaseballSoft Field Equipment. Size: 9amp;quot;. Anchor Stakes. Committed to bring you the best products on the market. Satisfaction ensured. |
|
|
Anchor Hocking 2 Gallon Glass Jar with Cover, Each. Each $23.98 Manufacturer: Anchor Hocking. Each. For more than 100 years Anchor Hocking has made a wide variety of high-quality glassware products that are fashionable, functional and affordable. This large heritage hill glass jar with cover is no exception. This jar |
|
|
Anchor 50 mm 50% Cr-39 Cover Lens. Each $1.15 Manufacturer: Anchor Brand. Each. Meets all applicable specifications and standards Color = Clear Lens Material = 50% CR-39 Plastic Resistance = Scratch, Static Width = 50 mm OSHA Customers also search for: Discount Anchor 50 mm 50% Cr-39 Cover Lens, Buy |
|
|
Anchor Brand 100CC322 Anchor Cc322 Cable Cover 3 Inchx22apos; $49.43 Nonconductive zipper with an overlap flap protects the zipper from weld splatter . Special snugstraps serve as a cinching mechanism at both ends of the cable cover . Tabs secure the cover to the cable assembly |
|
|
Anchor Brand 100CC310 Anchor Cc310 Cable Cover 3 Inchx10apos; $32.83 Nonconductive zipper with an overlap flap protects the zipper from weld splatter . Special snugstraps serve as a cinching mechanism at both ends of the cable cover . Tabs secure the cover to the cable assembly |
|
|
Anchor Brand 100CC422 Anchor Cc422 Cable Cover 4In X 22Ft $58.63 Nonconductive zipper with an overlap flap protects the zipper from weld splatter . Special snugstraps serve as a cinching mechanism at both ends of the cable cover . Tabs secure the cover to the cable assembly |
|
|
9'' Heavy Duty Field Cover Anchor Stakes - 1 Dozen $30.47 PLEASE NOTE: THIS ITEM CANNOT SHIP VIA 3-DAY DELIVERY.For use with field covers that require an anchor. |
|
|
Anchor Brand 100PCG250 Anchor Pcg250 2 12 Inch Gauge Cover $18.02 Replacement gauge covers and crystals. Onepiece threaded polycarbonate. Diameter: 21/2 . Material: Polycarbonate. Color: Clear. Type: Gauge Cover. |
|
|
Anchor Cc-3-10 Cable Cover 3" x 10'. Each $24.44 Manufacturer: Anchor Brand. Each. Non-conductive zipper with an overlap flap protects the zipper from weld splatter Special "snug-straps" serve as a cinching mechanism at both ends of the cable cover Tabs secure the cover to the cable assembly Brand Name |
|
|
Anchor Cc-3-22 Cable Cover 3" x 22'. Each $41.08 Manufacturer: Anchor Brand. Each. Non-conductive zipper with an overlap flap protects the zipper from weld splatter Special "snug-straps" serve as a cinching mechanism at both ends of the cable cover Tabs secure the cover to the cable assembly Brand Name |
|
|
Anchor Cc-4-22 Cable Cover 4" x 22ft. Each $40.45 Manufacturer: Anchor Brand. Each. Non-conductive zipper with an overlap flap protects the zipper from weld splatter Special "snug-straps" serve as a cinching mechanism at both ends of the cable cover Tabs secure the cover to the cable assembly Brand Name |
|
|
Jaypro Sports FP100 Floor Anchor $252.2 Brass cover plate and anchor work independently to allow for installation into floating wood floors. Billet steel body gives 9000 lb pullout strength. Center is 1/2 13 thread with spring loaded closure ring. 31/2 Diameter brass cover plate. Cylinder width: 11/2 . |
|
|
Rob Johnson (News Anchor) $93.99 High Quality Content by WIKIPEDIA articles Robert S. Johnson (born April 1, 1968) is the principal news anchor at WBBMTV in Chicago. Rob Johnson is the coanchor of CBS 2s 5:00 PM and the solo anchor of the stations 6:00 PM and 10:00 PM weekday newscasts. He joined CBS 2 in August 2006 from WLSTV where he had worked since 1998 as weekend anchor and reporter. Johnson has covered numerous major news events in recent years from Chicago to New Orleans, to Honduras. He anchored and reported from New Hampshire, Texas and Pennsylvania during the 2008 Presidential primaries. In 2007, Johnson traveled to Germany to cover Illinois Lt. Governor Pat Quinns visit to Landstuhl Regional Medical Center to meet with wounded soldiers during the holiday season. Earlier that year, Johnson reported extensively on the Chicago Bears Super Bowl run in Miami, including live reports from South Florida during Super Bowl week. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 148 Publication Date: 2010/07/19 Language: English Dimensions: 6.00 x 9.00 x 0.34 inches |
|
|
Anchor Brand 101A427N/L Anchor Outside Cover LensNo Label $28.6 10 Each Per pack. Color: Clear. Length: 33/16amp;quot;. Material: 100 Polycarbonate. Thickness: 0.04amp;quot;. Type: Outside Cover Lens. Width: 33/16amp;quot;. |
|
|
Anchor Hocking 3 Quarts Heritage Hill Jar with Cover. Each $12.77 Manufacturer: Anchor Hocking. Each. Customers also search for: 3Qt Heritage Hill Jar W Cvr - storage glass Glassware Storage |
|
|
Anchor Hocking 1 Gallon Penny/Candy Jars with Cover. Case of 4 $41.78 Manufacturer: Anchor Hocking. Case of 4. One gallon glass jars with a round metal cover. These jars are perfect for storing anything - from sweet candy treats to loose change or colorful buttons! The unique slanted design makes displaying everyday items f |