Boat Survey Dubai

Boat Survey Dubai:

On-Site Evaluation at Departure Port

The attending surveyor of the Constellation marine will carry out the following work scope:

Tug Approval Survey

Using a checklist, he inspects the towing vessel to ensure that it complies fully with the requirements of the operation. He will, if any significant defects are found, inform his base office who will, on the advice of the field surveyor evaluate the defect. They may then advise the client and suggest an appropriate course of action.

Barge Survey

This is a detailed physical examination of the barge itself, its watertight and structural integrity, general condition, towing arrangements and certification. He may require tests or demonstrations of various systems or equipment. A checklist may be used. As with the tug any serious defect will have to be rectified.

Cargo Securing Inspection

A thorough physical inspection of the sea fastening of the cargo to the barge is carried out using the “as designed” approved drawings to check that the system built is what was actually approved. This physical examination includes inspection of the test data for the welded connections (including the qualifications of the welders), measurements of length and angle of braces, underdeck strengthening if required, tightness and security of bolted connections, tumbuckles and any other securing devices. Protection of the cargo from the effects of wind, water and other conditions. Internal security of the cargo items if applicable.

boat Operational Survey

Using the data supplied by Constellation’s base office he examines the barge as loaded for draught, trim ballast distribution and provision of any extra equipment and test any special systems fitted. Constellation’s surveyor reviews the tow route with the tug master, discuss and briefs the surveyor on requirements of the Certificate of Approval and ensure that the tug is fully bunkered, stored and manned for the operation. He liaises and approves arrangements with the client for the safe exit of the tow from port, the provision of tugs or pilots and any other special considerations such as tidal state, air draught and traffic management. If a tow-out meeting is planned he attends it, representing his client and company interests. Additionally, the provision of weather forecasts and the compliance with them will be inspected. Constellation’s surveyor uses a sailaway checklist to ensure that all is in order. Once he is satisfied that all is prepared and any special conditions met, he signs and issues the Certificate of Approval just prior to the departure of the tow for sea.


Purpose of Inspection

The inspection of a vessel being considered for or hired to carry out a towage operation is made to determine:

(a) The suitability of the tug for the intended towage operation.

(b) The general condition of the tug and its equipment.

(c) The compliance with any fixed parameters set by the tow’s underwriters or


 The inspection is carried out by:

(a)  Constellation’s warranty surveyor attending the tow for the purposes of issuing a    towage approval certificate.

(b)  Constellation’s TOWMASTER who will be in charge of the operation.

(c)  In the case of rig moves of both semi-submersibles and jack-ups, the master of the rig in question assists our warranty surveyors.

(d)The representative of a potential charterer of the tug when selecting vessels for a particular towage operation is part of our reporting.

Carrying Out the Inspection

The checklist and report form provide the basic documentation of the inspection, but Constellation’s surveyor also carries out the following tasks – after a thorough examination of the certificates and paperwork presented to him.

Interview with the Master

The discussion with the tug’s master covers:

(a)His formal qualifications and experience, including the types of towing operation he has performed and his length of service on the vessel. The Constellation Marine’s inspector ascertains the qualifications and experience of the vessel’s officers and crew.

(b) Constellation Marine’s inspector will discuss the proposed towing operation with the master by giving him details of what is to be towed and where, with appropriate sketches and details of the towing gear, both main and emergency, fitted to the vessel.

(c) Constellation Marine’s inspector informs the master of any preset limits or special requirements of the tow.

(d) Constellation Marine’s inspector will ascertain if any part of the vessel or her equipment is defective, damaged or particularly idiosyncratic in operation.


 Examples of some such problems maybe (but not limited to):

1.  Bow thruster – motor works fine, but propellers dropped off.

2. Joystick control – particular types of fault make both main engines go full astern.

3.  Bow thruster motors overheats after about 30 minutes of continuous operation   at ¾ Power and has to be shut down.

4. Dog clutches and pawls on the main towing winch have no manual back-up control. If service power is lost and the clutches or pawls are engaged, the winch cannot be put into free running pay out position.

5. The spare tow wire is “pretty old”, in fact it has had “quite a bit” cut off when a short work wire was needed.

6. The towing spring has had a sample cut out and tested. It broke at half the original (new) breaking strain, but was shortened, respliced and is presented as “the towing spring”.

7. The vessel has a mixed nationality crew. There is a serious language problem between the deck crew and the master and mate.

8. The deck crew were recruited on the basis of cost alone. Their knowledge of tow gear and rigging is limited in the extreme.

9. The main engines share a common lubricating oil sump. Diesel oil contamination due to bad piston rings and injector problems results in the entire main engine lubricating Oil system being affected, with the possibility of major engine damage or engine performance being lowered.

10. One of the two main generators, generator end is stripped down and being dried out. A deck hatch directly above the main line leaked badly in a storm.


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