Page 84 - Rules of Navigation2020

Art. 58 - Escorting Tugs:
(1)
The escort of VLCCs, ULCCs, L.P.G, L.N.G, Large Bulk Carriers and other vessels, except
Containerships less than 170,000 SC.N.T will be as follows:

(1) Loaded vessels less than 70000 SC.N.T. will be escorted by one tug when the vessels
(2)
draught is more than 47 feet.

(2) Loaded vessels from 70000 SC.N.T. to 90000 SC.N.T. will be escorted by one tug.
(3) Loaded vessels over 90000 SC.N.T. will be escorted by two tugs.

(4) Vessels in ballast over 130000 SC.N.T. will be escorted by one tug.
(5) L.P.G., and L.N.G. over 40000 and up to 90000 SC.N.T. (Except G.F.), or loaded with
Ammonia cargo (3,4) will be escorted by one tug, and those over 90000 SC.N.T. will be

escorted by two tugs.
(6) Vessels in ballast with beam over 218 feet up to 233 feet will be escorted by one tug.

(7) Vessels in ballast with beam over 233 feet will be escorted by two tugs.
(8) Loaded Semi-submersible vessels carrying drillers or floating units (300 SC.G.T. and
over) will be escorted by one tug or more tugs as decided by SC port office after survey

on arrival.
(9) Integrated Units to be escorted by one tug during first transit. (See special cases Para "F"

Appendix No. 1 p. 71)
(10) Containerships of 170,000 SC.N.T and more will be escorted by 2 tugs.

(11) Loaded tankers, bulk cargo vessels and chemicals less than 70,000 SC.N.T and not fitted
with double bottom tanks are escorted by one tug.
(5)
N. B. (1):
Reference to Art. 57 and Art. 58:
(1) Any vessel escorted by one tug and the situation requires another imposed tug, the first is

for escorting and the other is considered as imposed tug.
(2) Any vessel escorted by two tugs and the situation requires a third imposed tug, two

escorting tugs will be assigned for escort but the third tug is considered as imposed tug.
(3) A vessel may be escorted by 3 tugs (maximum) during the normal transit unless there is a

technical reason.
(4) Vessels to pay only passage rental rates for escorting or imposed tugs that actually had

escorted the vessel during SC transit.

1 ) For escorting certain vessel during Canal transit.
2 ) The SC.N.T. refers to the determined net tonnage regardless to spaces temporally added upon transit (Such as
double bottom tanks, Containers on deck … etc.)
3 ) L.P.G., L.N.G. vessels contain (Tank of deck) completely separated from cargo tank with maximum tonnage
of 180 tons will be considered as gas free vessel.
4 ) G.F. carriers are to be treated as tankers in Ballast
5 ) Not applicable to LPG and LNG carriers.

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