Mooring and foundry line

A good anchoring is the best insurance policy that can exist and, undoubtedly, the basic element of this correct anchoring is none other than the anchor.

Likewise, we cannot overlook the importance of each of the elements that make up the anchoring line; this includes:

• The chain: it must have a minimum length equal to 5 times the length of the boat and a sufficient diameter
• The rope: we will opt for the polyamide rope, which is highly resistant to breakage and abrasion and at the same time has great elasticity, so it serves as a shock absorber

It is advisable to have a minimum of two anchoring points: a main one at the bow (for emergency anchoring) and a secondary one (in an easily accessible locker). It is advisable to have two different widths.
It is also advisable to have a third anchorage for "recreational" anchorages.

When anchoring we must take into account the depth, as well as the strength of the wind, in order to determine the length of the anchoring line, as follows:

• Less than 10 m:
  • 3 times the depth up to force 3
  • 5 times the depth up to force 6
  • 7 times the depth up to force 9
• More than 10 m: limit to 5 times the depth

If the wind is above force 9, you should place 2 anchors, each with a line or 2 anchors on the same line, 2 to 5 m apart and connected by chain. Let out a maximum of line.

CHOICE CHART FOR CHOICE OF GROUNDING EQUIPMENT

Maximum boat length	Boat displacement	Anchor weight (kg)	Chain diameter (mm)	Line diameter (mm)
Boats, barges	-	2	6	6
Dinghy, catamaran	300	3,5	6	6-8
Less than 5.50 m	800	6	6	10
6,50 m	1.000	8	6-7	10
7,50 m	2.000	10	8	14
9 m	3.000	12	8	14
10,50 m	4.500	14	8	14
12,50 m	8.000	16	10	18
16 m	12.000	20	10	18
18m	16.000	24	12	22
20 m	20.000	34	14	24
25 m	30.000	40	14	24
+ of 25 m	+ 30.000	60	16	28

Table for information only, anchor weight calculated according to the weight of the boat, criterion that may vary according to the particular characteristics of each boat.