The length of chain between the shackles of a ships anchor chain is 90 feet.
two shackles twelve o'clock
In most cases, people recognize bow shackles and anchor shackles as same, their names are used interchangeably. However, although the shape of bow shackle and anchor shackle looks similar, they are different type of shackles. Normally, the bowed part of bow shackle is much larger than an anchor shackle. Hopefully, this content could be helpful to you.
It is the anchor chain.
an anchor that is on a chain and is winched up onto the boat
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An anchor line is a very heavy rope or chain by which a ship's anchor is hoisted.
the length should be 8 times the depth of the deepest water you are planning to anchor in.
A ship is held in position by the weight of the chain laying on the bottom. The anchor is used to grab on the bottom when laying anchor. After the anchor is down, several lengths of chain is paid out. The weight of the chain is what holds the ship. The circumstances determine how much chain is needed and which type of anchor to use. Therefore they don't BOTH need to be very long.
The "rode" as it is called, is the the line (rope-with chain attached at the last five to ten feet connected to anchor) or chain (in shots-90 feet), shackles, pins and swivels. These are all instrumental in a proper anchoring of the vessel. The most agreed on method for the proper scope (amount of line) is 5' to 7' of line per foot of depth. Feet should be converted to fathoms for larger vessels and deeper depths. Most larger ships don't have more than 150 fathoms of chain.
7-10 times
Not really. The stem supports the rest of the plant. The analogy of an anchor should be referring to the plant's root system. The roots anchor the plant to the ground. The stem could be likened to the anchor chain that fastens the anchor to the boat, although an anchor chain has nothing to do with transporting water and nutrients.