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Handbook of best practices

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Name<br />

Observatory<br />

type<br />

Number <strong>of</strong><br />

instruments<br />

Distance from<br />

land (km)<br />

Max. Water<br />

depth (m)<br />

E1-M3A Multiple arrays, cabled 20 46 1440<br />

E2-M3A Multiple array, gliders 14 100 1220<br />

ESTOC Single array, gliders 19 97 3615<br />

Filchner Ronne Multiple arrays 4 200 618<br />

FRAM Multiple arrays, gliders 100 150 5500<br />

LION Multiple Arrays 25 135 2400<br />

MoMAR Multiple arrays, stand alone 3 nodes n/a 1700<br />

NEMO-SNl Cabled 13 25 2036<br />

NOG Single array 3 1000 4235<br />

OBSEA Cabled 16 4 20<br />

PAP Multiple arrays 26 200 4850<br />

Pylos Single array 14 18 1670<br />

SOG Single array 3 1500 5300<br />

SOR n/a n/a n/a n/a<br />

Station M Single array 7 n/a 2000<br />

Tenatso Multiple arrays 30 110 3603<br />

W1-M3A Multiple arrays 25 80 1200<br />

1.3.3 Mooring lines/anchoring systems<br />

1.3.3.1 Mooring line components – materials<br />

Mooring chains<br />

One <strong>of</strong> the most common components used in all the different types <strong>of</strong> mooring lines are<br />

chains. In most cases the chain will be placed in the upper or/and lower part <strong>of</strong> the mooring<br />

line. There are two general types <strong>of</strong> chain; the stud link chain and the stud-less chain. A<br />

variety <strong>of</strong> chain dimensions, with different breaking loads, is available for all the types <strong>of</strong><br />

mooring lines. The main advantage <strong>of</strong> the stud link chain is that the stud geometry prevents<br />

the chain to entangle. However, the stud in the chain has a negative effect on the fatigue life<br />

<strong>of</strong> the mooring line. Therefore, stud-less chains are more commonly used in open sea<br />

mooring systems.<br />

22

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