this question was in my mind for years… if the anchor keeps the huge ship from drifting, how do you get free when you want to sail away ?
In: 3683
I’m sure people will have better answers, but essentially:
1) anchor type is used based on ground type to address this
2) they do sometimes, you can get them out by maneuvering the ship to pull on the anchor in different directions to dislodge it
3) sometimes (mostly smaller ships) you just cut it free
4) sea beds where it’s shallow enough to anchor aren’t usually riddled with large rocks, and Anchorages are chosen for considerations like bottom type
I’m sure people will have better answers, but essentially:
1) anchor type is used based on ground type to address this
2) they do sometimes, you can get them out by maneuvering the ship to pull on the anchor in different directions to dislodge it
3) sometimes (mostly smaller ships) you just cut it free
4) sea beds where it’s shallow enough to anchor aren’t usually riddled with large rocks, and Anchorages are chosen for considerations like bottom type
For larger ships, the anchor is just the weight that pulls the chain out of the chain locker and it’s actually the cumulative weight of the chain that holds the ship in place.
For larger ships, the anchor is just the weight that pulls the chain out of the chain locker and it’s actually the cumulative weight of the chain that holds the ship in place.
Firstly you chose the type if seabed where you anchor. One with big rocks is not good place to anchor in the first place.
Then, as you pull in the anchor cable the ship or boat moves forward towards the anchor. This brings the anchor chain more and more vertical which levers the tines out of the seabed.
Finally you might also employ a “tripping line”, a second cable attached to the back of the anchor. If you cant disengage the anchor forwards, this pulls it out backwards.
Firstly you chose the type if seabed where you anchor. One with big rocks is not good place to anchor in the first place.
Then, as you pull in the anchor cable the ship or boat moves forward towards the anchor. This brings the anchor chain more and more vertical which levers the tines out of the seabed.
Finally you might also employ a “tripping line”, a second cable attached to the back of the anchor. If you cant disengage the anchor forwards, this pulls it out backwards.
For larger ships, the anchor is just the weight that pulls the chain out of the chain locker and it’s actually the cumulative weight of the chain that holds the ship in place.
Firstly you chose the type if seabed where you anchor. One with big rocks is not good place to anchor in the first place.
Then, as you pull in the anchor cable the ship or boat moves forward towards the anchor. This brings the anchor chain more and more vertical which levers the tines out of the seabed.
Finally you might also employ a “tripping line”, a second cable attached to the back of the anchor. If you cant disengage the anchor forwards, this pulls it out backwards.
Anchors resist a sideways pull. When anchored you have enough anchor rode (rope and/or chain) for at least double the depth of water. The weight of the rode makes it form a curve called a catenary which means that at the anchor the pull is almost completely horizontal.
Then when you want to raise the anchor you pull in the rode until it is straight up and down. This rotates the anchor and breaks it out of the seabed without much resistance.
As for avoiding getting the anchor stuck in rocks, the trick is not to anchor in places with rocks. A lot of seabed is mud, sand, shingle etc.
Anchors resist a sideways pull. When anchored you have enough anchor rode (rope and/or chain) for at least double the depth of water. The weight of the rode makes it form a curve called a catenary which means that at the anchor the pull is almost completely horizontal.
Then when you want to raise the anchor you pull in the rode until it is straight up and down. This rotates the anchor and breaks it out of the seabed without much resistance.
As for avoiding getting the anchor stuck in rocks, the trick is not to anchor in places with rocks. A lot of seabed is mud, sand, shingle etc.
Latest Answers