OCIMF_Mooring_Equipment_Guidelines_(Second_Edition)

3.3 REQUIREMENTS AT SPMS

The required fittings for mooring to an SPM are de-scribed in Reference I (" Recommendations for
Equipment Employed in rhe Mooring of Ships at Single Point Moorings".) The fitting requirements
from Refe rence I are produced ill Append ix A. Des ign o f fitlin" · in accordallce wirh ApI endix A
will automatically comply with OCIMF recommendations for SPM mooring. and is th erefore
recommended. Special attention must al 0 be paid to the requirements of specific SPM operators.
Cases are known where ships of Ics than 150 kDWT bave been rejected due to lack of a second
slopper, although current QCI M F recommendations requi:re tbis only for ships over 150 kOWT.

3.4 REQUIREMENTS FOR EMERGENCY TOWING

In 1994 [MO agreed a mendments to th e SOLAS Convention as a new Regullllion Ch VIlS-1

(Ch 11-1/3-4 from 1./7 /91)). which conta.ined the fo llowl 11 g provisious ;

• All "taokers" of 20,000 dwt and above constructed after 1st January 1996 are to be provided
  with an emergency towing arrangement at both ends.


• All existing "tankers" of 20,000 dwt and above are to be provided with a n c-l1)crgcncy towing
  arrangement at both ends at the first scbeduled dry-docking after 1st January 1996, but in
  any event, nOI later than 1st January 1999.


• TIle term "tankers" includes oil tankers, chemical tankers and gas carriers.


• The minimum components for an emergency [owing arrangement are to comprise of tbe
  following:

Component Forward Aft

Towing pennant Optional Required

Pick-up gear Optional Required

Chafing gear Required Dependent on design

Fairlead Required Required

Strong point Required Required

Roller pedestal lead Required Dependent on design

• The forward arrangement of stTong point, fairlead, chafing gear and roller pedestal lead
  reflects the guidance previollsly contained in [MO Assembly Resolution A.535(13), which on
  many oil tankers, may be accommodated by the fillings recommended to facilitate mooring at
  SPM's (see appendix A).


• The arrangemelll aft contains a major new provision introduced since IMO Assembly Resolu-
  lion A.535( !3) was develope-d, namely the requirement for the ship to carry a pre-rigged
  towing pennant incorporating pick·up gear. The pick-up gear must be capable of being
  deployed manually by one person and the pennant must be demonstrated to be capable of
  fuU deployment within j 5 minutes under harbour conditions.

3.5 REQUIREMENTS FOR MULTI-BUOY MOORINGS

Multi·buoy mooring (MBM) consists of tying up a ship to several pennanently anchored buoys in

conjunction with the ship's own anchors. It is also called conveotion al buoy mooring or 'CBM '. A

typical five-buoy configuration is shown in Fig. 3.11. In rare cases the ship is moored 10 buoys only.