14.22 and 14.23. towage arrangements, including the suitability of the towing vessel or tug/s, the towed unit/s and any cargo on board, are fit for the intended voyage. A recovery trailing line with a pick-up buoy shall be fitted to the emergency towing wire rope. The barge is loaded by a Cutter Suction Dredger or by a Backhoe Dredger. 205 0 obj <>stream A tow of the main tow line of 200 m of 10” circ. A typical fitness for tow survey includes: • Satisfactory condition of the tug and/or barge and/or cargo stowage as applicable. The most frequently used barge is the “Europe-barge-class type IIa”. Connections of bridle and towing pendant, if applicable . For this, the tug is first maneuvered to the stern of the barge, where the float line and the float buoy are. Tow configuration – to ensure only single tow arrangement is used; avoid using double or tandem tow. A third line connects the triplate to the winch of towing tug. Two lines run from tow brackets through fairleads on the barge and connect to a triplate through towing shackles. Distance between both can reach 200 metres and more. In the nautical world a “long tow” is a tug boat pulling a barge on a long cable. towing arrangements shouldbe approved by the Administration, based on the Guidelines developed by the Organization(MSC.35 (63), as amended). Manoeuvre the tug slowly to the bow, gradually taking the weight of the tow. In certain regions, piracy and hijacking is also a common occurrence; this can be caused by poor watch-keeping, poor voyage planning and/or very little or no anti-piracy measures. Divakaran holds a C.O.C Class 1 Master Mariner (Unlimited - Foreign Going). Voyage plan & intended route details – to ensure risk exposure in relation to piracy and/or sea conditions is controlled. The trailing tug (t) is in double tow of far barge (2) and near barge (3). Towing arrangements in tugboats and barges are divided into towing equipment and towing arrange-ments and specified generally as follows: Name of towing arrangements Tugboats Barges Remarks towing equip-ment tow-lines it may be acceptable to be provided on barges chain for linking tow-lines deltaplate if may be necessary in accordance with the towing arrangements Capt. Characteristics of high risk tugs and barges: What should be checked before shipping on barges? FIG. This would likely lead to the vessel not complying with international maritime standards. Proceed to tow the barge to a safe location. Box 610 1701 E. Market St. Jeffersonville, IN 47130 (800) 457-6377 or (812) 288-0100 St. Louis: (314) 544-7200 Equipment: Towboats and all types of barges for hire. =�_��)���S���S��!�. Boats: Settoon Towing offers a wide range of horsepower configurations to maximize fuel consumption and efficiency. The original legislation required tankers of 20,000 tons deadweight and greater to be fitted with emergency towing arrangements at each end of the ship. This is commonly caused by crew negligence, poor navigation watch keeping, inadequate display of lights and shapes by tug and/or barge and defective navigation aids. Another configuration is the tandem tow, also termed double tow, where one tug tows two barges, which possess higher risk compared to a single tow. Tug, barge and crew certification – to ensure tug, barge and crew comply with required standards. The most common configuration is the single tow, where one tug tows one barge. For the past decade, he specialised in marine risk management through a wide spectrum of marine-related risk minimizing and prevention surveys. 2. Speed of advance through the water not to exceed _____ knots and to be reduced in the event of heavy weather. This is usually caused by one or a combination of factors such as engine failure, underpowered tug, outdated navigation charts and towline or related tow gear failure. lost barge retrieval, are to be developed, and crews are to be properly trained accordingly. Confirmation that the tug is manned with appropriate crew. Make fast the pennant eye to the tug towing hook. 7. A typical tow arrangement with a towing bridle is shown in Figs. Customer shall be afforded two hours of free standby time to accept delivery of its barge/vessel with time in excess of two hours charged at the demurrage rate of $250.00 per hour. The reality is far from these assumptions and reasons for this will be elaborated on further in this article. 138 0 obj <> endobj %PDF-1.6 %���� Disconnect main towing bridle from tug. Barge recovery low speed approach . Tug and barge specification – to ensure among others: vessel age, size, horsepower, capacities, limitations etc. 4. Others would include versatility in which to a certain extent, barges are almost like a general cargo vessel, able to transport a wide variety of cargo, albeit in much smaller quantities. At the point of destination, Customer shall make advance arrangements for fleet/shift tugs if required for placement of the barge/vessel. There are a couple of reasons that lead to barge shipments being so popular and common within the Asia Pacific region. The sight of a tug towing a barge is probably a very common sight one would observe along the Malacca Straits or even on waters surrounding South East Asia and Asian countries. Others include fire losses, typically caused by poor housekeeping, unsafe practice, crew negligence, inadequate/poorly maintained fire-fighting equipment and/or nature of cargo (inherent vice). So common that it may sometimes be seen as just another type of sea transportation mode which is considered relatively simpler, but at times and quite inaccurately, regarded as lower risk compared to transporting goods using larger vessel. Another reason would be cheaper mode of transport as these vessels are much cheaper to operate and maintain, compared to larger ocean-going vessels. The emergency tow wire is rigged from a stout pad eye welded down on the centerline and well forward on the bow of a Foss barge. Barge to be inspected prior to and after the tow … 185 0 obj <>/Filter/FlateDecode/ID[<31F3493B7230014EA0C4E1C0EBD3971D>]/Index[138 68]/Info 137 0 R/Length 168/Prev 205160/Root 139 0 R/Size 206/Type/XRef/W[1 3 1]>>stream 0 Retrieve float line until the eye of the emergency towing pennant is onboard the tug. FI Towing equipment supporting structures H050 - Structural drawing Including towing force design loads and winch load footprint. 5. 1.2.2 The towing load should not exceed safety working loads of deck fittings as shown in 2.7 and 2.8 of this booklet. 6, Arrangement (6), triple tow of barges is an adaptation of Arrangement (2) with two tugs for three barges. Construction Risk & Insurance Solution (CRIS), Global Health, Safety and Environmental (HSE) services, Chubb Assistance for Business Travel Policyholders, Report an Accident & Health and Travel Claim. Thus, if the bollard pull of the tug is BP, then the available bollard pull shall be . Towing using other than with a towing winch (i.e. 1. Contact: Jerry Linzey, senior vice president, chief Barge recovery higher speed approach. Manoeuvre tug to stern of barge. Contact Capt. Another would be the over age, especially if unclassed/non-IACS classed, where the vessel is not maintained and operated to the required standards, which among others, could lead to loss of propulsion or structural failure. Capt. The barge is self-propelled, and sails to the deposit area, where it unloads the soil. Among them is accessibility advantage as tugs and barges are smaller with much lower draught compared to larger vessels, therefore able to access locations not accessible to large vessels. This includes: Satisfactory condition of the tug, barge and cargo stowage. endstream endobj startxref of Polypropylene rope by using shackle of 35 Tons SWL and one end of 2nd towing line was then connected to … %%EOF River Barge Systems, Inc. (See Canal Barge Co.) Barge and Towing Companies American Commercial Barge Line Company P.O. After 6 hours of When heavy weather where the towing load increases significantly is forecasted, special considerations are to be paid to towing speed, towing lines arrangement and ship’s stability. tow hook, cruciform bollard or bridle) are not acceptable for ocean tows. Another configuration is the tandem tow, also termed double tow, where one tug tows two barges, which possess higher risk compared to a single tow. When in doubt, always refer to your insurer for specialist advice and assistance. 6. 76m barge - MB252 The strong point of the barges are the large deck space, high workability, 20 ton deck capacity and 4 point mooring. There are other longer and shorter barges available that have been adjusted in their dimensions, according to their designated navigation area and waterway requirements. Stranding and foundering are probably the most common losses experienced by tugs and barges. Towing Bridle Force Calculation: The last topic we’ll talk about in this article is the calculation of the force on the lines of a Towing Bridle. Have a question or need more information? Siva is the Head of Transportation Risk Management for Asia Pacific and has over 20 years of experience in the marine industry. 4 - Towing Barges / Dead Ships Pg.18 21st April 2014 MM . h�bbd```b``V���� �ED�ʂ�`�L0�,�L2�H60�"�N�H�0�L������Z0)�+D�D�E��H�:�Ji)v,��lg3�d�p For tankers built before 1st July 2002, the design and construction of emergency towing arrangements should be approved by the Administration, BP(available) = BP x α int . Stability 16. stability calculations addressing the tow conditions should be performed to insure positive stability in compliance with the rig operating manual. FORTH PORTS LIMITED Document ID FP PMSC OP 21_03 Authorised By MM Original Date ... that the Master provide the Pilot with a deck General Arrangement showing the layout and safe working load (SWL) of the mooring fittings, where known, Siva for more details: Sivakumaran.Divakaran@chubb.com. of polypropylene rope was connected to the towing hook on the tug and another one end connected to the 2nd towing line of 60 m of 10” circ. Towing arrangement Z030 – Arrangement plan Arrangement of towing line, fastening arrangement and details. Capsizing are also commonly attributable to the some of the above factors and sometimes caused by inadequate stow and/or securing of cargo which compromises stability or structural failure. Another common accident would be collision with other vessels. Capt. Several years ago, the International Maritime Organization (IMO) introduced an amendment to the International Convention for the Safety of Life at Sea (SOLAS) regarding emergency towing arrangements. A main tow line bridle recovery line(s) should be fitted and run from the and of the bridle or tow plate to a winch on the barge to allow retrieval in the main tow wire(s) part. Siva is a qualified Master Mariner having served at sea for about 10 years mainly on board general cargo and bulk carriers, as well as multi-purpose and offshore drilling vessels. The most common configuration is the single tow, where one tug tows one barge. Barge recovery. Contact us to find out how we can help you get covered against potential risks, Common losses with typical attributable causes. The whole idea is to connect the tug’s towing line safely to the emergency tenant of the abandoned/floating vessel. Barges, on which cargoes are shipped, are usually non self-propelled and therefore dependent on a tug for propulsion; where the tug is the prime mover for the barge, connected to the barge using a towline. The rigging scheme begins with two tested tow shackles: the first is pinned at the pad eye and the second is pinned to the butt chain so … The survey is to establish if the towage arrangements for the tow, including the towing vessel or tug/s, the towed unit/s and cargo are fit for the intended voyage. η = 2.1 for typical barge shapes . Barges: Settoon Towing offers several sized and arrangements of tank barges designed to fulfill our customer's specific requirements. Procedures addressing emergency situations related to the tow, i.e. Other characteristics would be little or no Port State Control (PSC) Inspections history, owners/operators with poor reputation, vessel flagged in little known or PSC blacklisted flags. • Confirmation that the tug is manned with appropriate crew. Prior to joining Chubb, he was Principal Surveyor at an international surveying firm in Malaysia. It is a way of shipping anything that can be loaded on a barge in quantities that are smaller than would justify the … ���w�����lfW�� ��tnB�EI��Dz�� >�`�20҉�����@� �'� Types of configurations and arrangement The most common configuration is the single tow, where one tug tows one barge. Wire diameter measurement . An overview is provided in the following table: Table 2: Standard sizes of pushed barges in Europe4 These two lines are referred to as the towing bridle. Barge MB 251 is mounted with a 600 ton crane. AP AP = For approval; FI = For information 3. 15. A split hopper barge is a vessel with a large open hold, used to load and transport dredged material. One of these is when a tug or barge is unclassed or classed by a classification society that is not a member of the International Association of Classification Society (IACS). Types of tow arrangement Tandem Tugs : 2 tugs pulling (towing) one tow Normal arrangement for ocean tow with large objects/barge Typical arrangement; tow wire of lead tug connected to bow of the 2nd tug and 2nd tug line connected to towed unit Usually larger of 2 tugs is positioned between lead tug and tow. An emergency towing wire rope of minimum length equal to the length of the towed object shall be connected to a bridle or single leg connection, and lashed to the barge side for easy release. are suitable and adequate for intended cargo and voyage. Other types of configuration would be tandem and breasted tugs, where two tugs are used to pull one tow unit and termed according to the positioning of the tugs. Position (a) shows the combined tow as a train on course with the lead tug (1) in tow of a trailing tug (t) close hauled and a barge (1) more distantly towed. Vessel suitability and towage approval survey by an approved, reputable and independent surveyor – to ensure crew, vessel and related equipment are all in satisfactory condition and able to undertake the intended voyage safely. When they are towing in the ocean the cable can sometimes be REALLY long. h�b``�e``�� $~�e@�@���р,��)L�̛Yv2�0�2?f�g��z��.c:�C�#&iI�MB_�����0� There are a number of characteristics that would increase the probability of a loss materialising. Another characteristic is when the tug does not have the minimum power to tow the barge, in turn causes the tug to lose control of the barge especially during rough sea conditions. towing resistance of barge; ship towline arrangement verification towing tension at winch for various catenary depths and paid-out lengths bollard pull requirement for barge with cargo; barge motion load during transportation ( noble dention ) Another configuration is the tandem tow, also termed double tow, where one tug tows two barges, which possess higher risk compared to a single tow. Experience in carrying special cargoes – to ensure tug crew is familiar, adequately trained and equipped to handle risks associated with certain types of cargo.
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