marinetrader
Senior Member
- Joined
- Oct 6, 2007
- Messages
- 301
Youve just bought that new 44 foot Albin Sundeck trawler and shes everything you wanted in a trawler.* After upgrading some marine electronics, you will be prepared to do some cruising.* You cant wait to drop the hook and savor your time on the water.
But before you charge into it, is the anchor the right one?* It was on the Albin when you bought her so it should be the right one, right?* So what is the best anchor for you new boat?"
I get asked that question a lot, and the answer is that the type of bottom, be it mud, grass, sand, coral or rock, will decide the right selection of anchor, as will the size of your watercraft. Some anchoring spots may also call for more than one anchor.
Wind conditions will also be involved in how good an anchor holds; each time the wind speed doubles, the force on the boat and her anchor will increase by four times.
Sizing an anchor for your boat reinforces, the "bigger is better" concept; you really cannot have too much anchor. If your diesel engine fails and you are drifting toward an open inlet, having a suitably sized anchor ready could save you and your boat.* However anchor selection also has some practical issues involved; raising an anchor by hand with no electric windlass would be strenuous and consequently requires light and effective ground tackle.
Anchors must provide resistance in the sea bed to work properly. And the anchor's ability to work is totally dependent on its capability to penetrate the sea floor.* The selection of an proper bottom for anchoring is a great deal more of a critical factor than the style of the anchor.* You must take the anticipated bottom conditions into account when choosing your anchor.
Aboard my trawler the Patricia Ann, I use a 35 lb. Lewmar CQR.* It routinely holds in sand and mud bottoms in our cruising region without pulling free.* And it sets quite easily.
Here is a breakdown of likely options based on sea beds you may encounter:
Sand: Finegrained sand is easy for anchors to penetrate and offers dependably good holding power with predictable results.* Fluke anchors offer the best results in sand.
Mud: Mud has low shear strength, and requires an anchor design with a broad shank. This lets the anchor to go in deeply to where the mud has greater sheer strength. Mud bottoms are often only a thin layer of mud over clay, so anchors that can penetrate through the mud to the underlying material will hold better.* Hinged plow anchors and CQR anchors work better in this setting.
Rock and Coral: Holding power is most reliant on where you choose to drop the hook. Plow type anchors, with high structural strength to support the high point loads, normally work the best in rock or coral.* These anchors include the Claw, CQR, and Delta
Shale, clay, and grassy bottoms: These bottoms are the most difficult to address; the weight of the anchor will be the primary factor in gaining penetration and holding ability.* CQR and Delta anchors are found to be good due to their capability for penetrating vegetation. These conditions, however, have a high failure rate from anchors catching on roots or dragging on the surface, rather than grabbing something solid.
Here is a breakdown of the 5 types of anchors.* Price comparisons are based upon outfitting a 40 foot trawler.
1 - Fluke Anchors
Pros: Acceptable holding ability in sand.* Can be had in light weight aluminum.* Low priced.IHolds good in sand. Can be bought in light weight aluminum alloy.* Inexpensive.
Cons: Limited or no holding in rock, mud, grass, or clay bottoms.
Brands:* Fortress, Danforth, Guardian
Costs:* $109.00 for 40 ft boat
2 - Claw Anchors
Pros: Inexpensive. Sets rapidly and dependably in most sea beds and resets well. Highstrength onepiece design. Roll stabilized.
Cons: Difficult to stow without rollers or chocks. Limited holding power in mud or soft sand.
Brands:* Lewmar Claw, Manson Claw
Costs:* $109.00 for a 40 ft. boat
3 - NonHinged Plow Anchors
Pros: Very strong, made from heat-treated steel.* Works good in sand.
Cons: May have problems setting in mud, rock, grass or clay bottoms.* Pricey
Brands:* Delta, Anchorlift
Costs:* $278.00 for a 40 ft. boat
4 - NonHinged Scoop Anchors
Pros: Roll bar for easy resets. Strong high tensile steel construction.* Selflaunches from most bow rollers.* Good holding in sand and mud.* Sets easily.
Cons: More expensive
Brands:* Rocna, Manson
Costs:* $599.00 for a 40 ft. boat
5 - Hinged Plow Anchors
Pros: Widely used.* Heavy construction.. Stows simply on anchor rollers, and sets well in most sea beds. ·*** Cons: Requires large size for given boat size. Very expensive.
Brands:* CQR, Manson
Costs:* $749.00 for a 40 ft. boat
But before you charge into it, is the anchor the right one?* It was on the Albin when you bought her so it should be the right one, right?* So what is the best anchor for you new boat?"
I get asked that question a lot, and the answer is that the type of bottom, be it mud, grass, sand, coral or rock, will decide the right selection of anchor, as will the size of your watercraft. Some anchoring spots may also call for more than one anchor.
Wind conditions will also be involved in how good an anchor holds; each time the wind speed doubles, the force on the boat and her anchor will increase by four times.
Sizing an anchor for your boat reinforces, the "bigger is better" concept; you really cannot have too much anchor. If your diesel engine fails and you are drifting toward an open inlet, having a suitably sized anchor ready could save you and your boat.* However anchor selection also has some practical issues involved; raising an anchor by hand with no electric windlass would be strenuous and consequently requires light and effective ground tackle.
Anchors must provide resistance in the sea bed to work properly. And the anchor's ability to work is totally dependent on its capability to penetrate the sea floor.* The selection of an proper bottom for anchoring is a great deal more of a critical factor than the style of the anchor.* You must take the anticipated bottom conditions into account when choosing your anchor.
Aboard my trawler the Patricia Ann, I use a 35 lb. Lewmar CQR.* It routinely holds in sand and mud bottoms in our cruising region without pulling free.* And it sets quite easily.
Here is a breakdown of likely options based on sea beds you may encounter:
Sand: Finegrained sand is easy for anchors to penetrate and offers dependably good holding power with predictable results.* Fluke anchors offer the best results in sand.
Mud: Mud has low shear strength, and requires an anchor design with a broad shank. This lets the anchor to go in deeply to where the mud has greater sheer strength. Mud bottoms are often only a thin layer of mud over clay, so anchors that can penetrate through the mud to the underlying material will hold better.* Hinged plow anchors and CQR anchors work better in this setting.
Rock and Coral: Holding power is most reliant on where you choose to drop the hook. Plow type anchors, with high structural strength to support the high point loads, normally work the best in rock or coral.* These anchors include the Claw, CQR, and Delta
Shale, clay, and grassy bottoms: These bottoms are the most difficult to address; the weight of the anchor will be the primary factor in gaining penetration and holding ability.* CQR and Delta anchors are found to be good due to their capability for penetrating vegetation. These conditions, however, have a high failure rate from anchors catching on roots or dragging on the surface, rather than grabbing something solid.
Here is a breakdown of the 5 types of anchors.* Price comparisons are based upon outfitting a 40 foot trawler.
1 - Fluke Anchors
Pros: Acceptable holding ability in sand.* Can be had in light weight aluminum.* Low priced.IHolds good in sand. Can be bought in light weight aluminum alloy.* Inexpensive.
Cons: Limited or no holding in rock, mud, grass, or clay bottoms.
Brands:* Fortress, Danforth, Guardian
Costs:* $109.00 for 40 ft boat
2 - Claw Anchors
Pros: Inexpensive. Sets rapidly and dependably in most sea beds and resets well. Highstrength onepiece design. Roll stabilized.
Cons: Difficult to stow without rollers or chocks. Limited holding power in mud or soft sand.
Brands:* Lewmar Claw, Manson Claw
Costs:* $109.00 for a 40 ft. boat
3 - NonHinged Plow Anchors
Pros: Very strong, made from heat-treated steel.* Works good in sand.
Cons: May have problems setting in mud, rock, grass or clay bottoms.* Pricey
Brands:* Delta, Anchorlift
Costs:* $278.00 for a 40 ft. boat
4 - NonHinged Scoop Anchors
Pros: Roll bar for easy resets. Strong high tensile steel construction.* Selflaunches from most bow rollers.* Good holding in sand and mud.* Sets easily.
Cons: More expensive
Brands:* Rocna, Manson
Costs:* $599.00 for a 40 ft. boat
5 - Hinged Plow Anchors
Pros: Widely used.* Heavy construction.. Stows simply on anchor rollers, and sets well in most sea beds. ·*** Cons: Requires large size for given boat size. Very expensive.
Brands:* CQR, Manson
Costs:* $749.00 for a 40 ft. boat