Scope is the ratio of the length of the deployed anchor rode to the height of the bow chock above the seabed. The greater the scope the more horizontal the pull on the anchor, and the better it will hold.
To determine how much rope to let out to get a 7:1 scope, you measure the depth of the water, add the boat's freeboard at the bow, and multiply that sum by 7. But, knowing the length won't help you a bit unless you can determine when you have let out that much rope. So, the very first thing to do with your new anchor line is to mark it. You can do this with a marking pen, but short yarns or tapes inserted throughout the strands is more durable and can be identified in the dark by feel.
|BOAT LENGTH (FT)||ROPE DIAMETER (IN)|
|25’ TO 35’||1/2”|
|35’ TO 40’||9/16”|
|40’ TO 45’||5/8”|
|45’ AND UP||3/4"|
|3-STRAND||3-STRAND HEAT SET||8-STRAND PLAIT|
** Presoak 8-Strand prior to use.
|GALV G-43 ISO||GALV BBB||S/S G-43 ISO|
** Feel free to contact us for chains of different lengths than available online.
NOTE: WHY THIMBLE?
Thimbles are used if you don’t have a windlass, simply attach it with a shackle and use it like a normal line. It gives you the option to disconnect it easily and replace it with a new chain.
Please consult your windlass manual to obtain correct size and type of Rope and Chain.
If any questions contact us.
Call: +1 786-631-1242
** American Rope is not responsible for incorrectly ordered items.