How to Size your Anchor and Chain
Here is a quick and simple guide to help you calculate the right size of anchor and the correct size of anchor rope and chain for your vessel.
|
Boat Length (m) |
Main Anchor (kg) |
Kedge Anchor (kg) |
Main Anchor Chain (mm) |
Main Anchor Rope (mm) |
Kedge Anchor Chain (mm) |
Kedge Anchor Rope (mm) |
|
6 |
8 |
4 |
6 |
12 |
6 |
10 |
|
7 |
9 |
4 |
8 |
12 |
6 |
10 |
|
8 |
10 |
5 |
8 |
12 |
6 |
10 |
|
9 |
11 |
5 |
8 |
12 |
6 |
10 |
|
10 |
13 |
6 |
8 |
12 |
6 |
10 |
|
11 |
15 |
7 |
8 |
12 |
6 |
10 |
|
12 |
18 |
9 |
8 |
14 |
8 |
12 |
|
13 |
21 |
10 |
10 |
14 |
8 |
12 |
|
14 |
24 |
12 |
10 |
14 |
8 |
12 |
|
15 |
27 |
13 |
10 |
N/A * |
8 |
12 |
|
16 |
30 |
15 |
10 |
N/A * |
8 |
12 |
|
17 |
34 |
17 |
10 |
N/A * |
8 |
14 |
|
18 |
38 |
19 |
10 |
N/A * |
8 |
14 |
|
19 |
42 |
21 |
12 |
N/A * |
10 |
14 |
|
20 |
47 |
23 |
12 |
N/A * |
10 |
14 |
|
21 |
52 |
26 |
12 |
N/A * |
10 |
14 |
|
22 |
57 |
28 |
12 |
N/A * |
10 |
16 |
|
23 |
62 |
31 |
12 |
N/A * |
10 |
16 |
|
24 |
68 |
34 |
12 |
N/A * |
10 |
16 |
* Under MCA Guidance it is not advisable for a vessel over 15m in length to use rope as part of the main anchor rode (rope). Chain is preferable for a vessel of this size.