Anchoring and Docking
- Marine/Boat Anchors, Fenders, mooring Buoys, Anchor Parts and Accessories for sale


 

Bruce & Claw Anchor type

Danforth type

Mushroom Anchors

Grapnel Anchor type

SQR (Delta style) Anchor


Problems - Anchoring Problems, Facts and Rules

Fisherman type - Fisherman anchors, characteristics & advice for selection

 

Mushroom Anchor

Mushroom Anchor type

Mushroom Anchor

 

 

"Mushroom" anchors -best in soft bottoms, not practical type for larger boats or yachts but Decent for very small boats to use as a lunch hook.Mushroom anchor can weigh several thousand pounds for this use and used extensively for moorings, and can weigh several thousand pounds for this use.


Mushroom Anchors - permanent type anchor

Best works well In a soft bottom(soft seafloors).


A mushroom anchor buries in by its own weight. This anchor type only works in soft seafloors that allow deep penetration.
To set a mushroom anchor on boat you need a power boat enough powerful to twist the anchor into the mud or sand bottom. The anchor Mushroom develops full holding power after approximately 2-3 weeks, also it must beinstalled well before you plan to use it on board.

 

Other types of Mushroom Anchors is

Pyramid anchor - Based on tne same anchor principles but with heavy weighted point with large flat surface.
Drilled Mushroom anchor - for coral or hard rock botom use, This anchor provide drilling a permanent mooring into the rock and also can protect coral reefs from bad damage, Drilled Mushroom anchor is cost effective to install several mooring at once.

 

Mushroom Anchor holding power

The anchor-holding-power depends on the rate at which the anchor silts in, which in turn depends on the type of the seabottom. In heavy weathe rmushroom type anchors often simply pull out of theseabed.

 

This mushroom anchor must suit ideally the boat's size.

 

Note: Typically, however, an anchor weight of beam length x 1.5 has been
considered generous. By this mathformula, a 30" boat with 10" beam would need a 450pound mushroom anchor for good holding power.

Mooring Type: 350 lb mushroomc for Bottom Condition - mud (set 5 ft deep) = 2,000 lb Breakout Force
500 lb mushroom for Bottom Condition - sond bottom = 1,700 lb lb Breakout Force

 

 

Figure below- Small size mushroom anchors are
sometimes used by fishing, anglers, but larger size mushrooms are used
mainly for permanent moorings, as they must sink into the sediment before they are more effective.

 

Temporary Mooring - Mushroom anchor

 

If you like to explore beautiful islands here is a simple and easymethod of temporarily mooring your vessel also boat without being stranded in a tidal area. The First Rule - keep extra line aboard the boat, for so for a painter to tic onto a stock anchor or nylon line of about 30' ,You can useanother shorter 3/8 line tied to a 15-pound Mushroom for when you want to stay awhile and tor anchorin.The end of this anchor line is tied to the transom anchor for whatever depth of water there is. The Mushroom-anchor is well balanced on top of the aftcrdeck of the boat near the transom, and the boat is given a push out to where you judge the tide isn't going to leave. For larger size boats or vessels you'll need heavier gear tor a permanent mooring.

 

Other types of Permanent anchors or moorings-Mushroom and Pyramid Anchors


An Anchor buries in by its own weight its Mushroom Anchors.Ones embedded in the seafloor mushroom anchor works well , the concave surface resists the load,but best in a soft bottom type of seafloors that allow deep penetration.To set a mushroom type anchor you need a powerful engine power boat to twist the anchor into the sea sand.This anchor- Mushroom twists into sand or mud, and develops full holding power after approximately two weeks, so before you plan ro use it it must be well installed. Release the mushroom anchor in the desired spot ps-for fishing with a scope of 3:1and circle around the Mushroom 3-times with the line taut. Pyramid Anchor "Dor-Mor" type Mushroom Anchor ar Based on the same principles of design as the mushroom anchor,but its large flatsurface resists the load and the heavy weighted anchor point of a pyramid design allows it to slowly penetrate and bury itself.


Mooring


Many boat owners prefer to leave their boats or yachts on moorings rather than in safe marinas, Knows the marina security, but the steady proliferation of boats places great demands on what little mooring space is left.A mooring consists of an anchor or a heavyweight on the bottom and a chain that rises to the surface, where it is attached to a floating Buoy. Mushroom anchors are commonly used in a triangle when swinging room is limited or singly.The rule of Thumb is that the mushroom anchor should weigh at least 4.5 kg or more for every 300 mm - foot of the boat's length (overall vessel length) for a 9 m boat(30 foot ). Where the Bottom Composition is suitable, helix anchors are screwed in to provide secure Holding power .If you use for weights concrete Blocks , they must be enough large to be Most effective, at least Three to four Times as Heavy as this type Mushroom anchors, Because they lose somuch of their gold weight when they're submerged.

Mushroom type anchors arc commonly used for permanent moorings since they sink deeply into the sediments over the time. Marine professionals often make the selection of ground tackle for larger boats.


Leaving a mooring - A permanent mooring is a ground tackle anchor system designed to remain in water place for whole seasons at a time.Generally Mooring anchors are cast-iron Mushroom(called because of their appearance) anchors. For temporary vessel anchoring Mushrooms anchors do not fast and dig enough and also too heavy but they excel as long term moorings on soft sea bottoms and will provide good holding power as a result.

The more and more steadfastly it holds,unreliable HP mushroom anchor (and will resist pulls from any side) the deeper it sinks and longer sits on a soft silt
or Mud, Clay, or sand Bottom. Normal mooring Rigs today employ a mushroom anchor shackled to a length of chain approximately equal in length to Three times the high-water depth in the anchorage.At the water surface is a reinforced mooring buoy, to which is attached the mooring pendant , a Heavy nylon rope with a large Buoy-eye spliced in its foredeck end.

 

Deep Anchors - Mushroom

 

Deep anchors are also heavy objects, usually of Iron,Steel or lead,disk or shallow bowl with a shank, that are fastened to a anchor chain or/and line and set on the river,lake, river or deep ocean bottom to keep a boat in best position, for fishing or for other work locations. This widely used anchor - mushroom anchor is a permanent mooring device - Mushroom has a 360-degree cupped lip and an upside-down mushroom appearance and that is more popular among small boat owners in freshwater, Also can be used in canoe or kayaks, lakes and rivers and is most useful under ideal bottom conditions, especially where there is a soft , but a mushroom anchor is not adequate in fast moving water, that in big, deep rivers, lakes, ponds, keep in mind, and cannot hold a large and heavy boats well, especially in a hard bottom or marl , unless that bottom has plenty of large rocks or large corals for sea bottom. The HP depends on the rate at which the mushroom silts in, which in turn depends on the type of bottom and anchor must suit the boat's size.

 

Inland Marine - Mushroom anchors

Inland Marine Company based in Massachusetts focused on boat moorings, installation methods and equipment. Currently Inland Marine offers a wide array of quality moorings products such as round shaft anchors, mushroom and helix anchors, mooring heads, shackles, extensions and much more , all the best pricing you will find around the US.

 

I.M. Mushroom Anchor

Inland Marine provide a mushroom anchor made from Steel for a permanent mooring. All mushroom moorings anchors are designed from Carbon steel welded construction has the longer-life, the property of bending rather than breaking. Designed with a larger eye that provide up to 25 percent more holding power
than a traditional cast mushroom anchors made from iron.

 

 

Because of the weight and size,mushroom anchors are available in different versions: from 15-20lb anchors Suitable for boats to 15 ft. to almost 1500 lb huge mushroom anchors for ships and large size vessels.

 

contacts:

2 Atlantic St.
S. Dartmouth, Massachusetts 02748
Tel: 508 984 1969

www.mushroommoorings.com