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CASE STUDIES

Condition Assessment Program (CAP) Surveys

A Condition Assessment Program (CAP) is the recognized method for a ship owner to demonstrate the quality and suitability of an asset for charter. Cargo owners and many of the largest charterers either require or prefer a CAP 1 or CAP 2 rating for all older vessels fixed to carry their cargo. The commercial opportunities for an older tanker, gas carrier, bulk carrier, containership or even an offshore support vessel (OSV) without a satisfactory CAP rating may be severely limited.

CAP provides a charterer with a technical evaluation of the physical condition and maintenance of a vessel above the requirements for class. The program includes a detailed survey of the structure’s gauging as well as extensive testing of the vessel’s machinery, equipment and cargo systems. This information combined with a strength and fatigue engineering analysis leads to a numeric rating being assigned to the vessel.

If you are a ship owner and you want to maintain your older vessel/s so that you can attract the best charters and therefore the best income, you need to have someone with experience to guide you through a CAP Survey, or even better still get us to do a full survey for you, in advance of the Classification Society so that you can plan your refit and repair budget.

CAP is a voluntary program, initially developed by the oil industry, to assess the continued fitness of older ships to carry their cargo safely. A CAP survey and gauging usually takes about 10 days and can be progressed while the vessel is on passage in ballast.

Broadeach Marine has extensive experience in helping owners prepare for CAP surveys.  In accordance with the recognised CAP rating criteria, we survey the full vessel and produce an extensive report for Hull, Outfitting and Machinery using the following scoring criteria.


Hull Structure:

Outfitting:

Protective coatings:

The example vessel was a 15-year-old Product Tanker with the following tank arrangement:

As part of the Hull surveys, we work closely with Class Approved Non-Destructive Testing (NDT) companies who also attend onboard to carry out Ultrasonic Thickness (UT) measurements of all necessary hull structures.  Depending on the age of the vessel will dictate how much NDT is required.

Diagrams above shows the general extent and locations of NDT thickness measurement required for 3rd Special Survey of a Double Hulled Oil Tanker in accordance with ClassNK Guidance

For each tank, we produce a simple report in accordance with industry standards.

And then we provide detailed comments to describe the condition of the tank and its structure, with any areas of concern being highlighted. An example of the text is given below:

Example Comments:

No. 1 WB Tk Port is a combined bottom and side tank that extends from the side wing under No. 1 Stbd Cargo Tk to the Centre Line of the vessel as a Double Bottom.

The general structural condition of the tank is given as 1, which means that the tank has been visually examined is found with only superficial reduction from as new or current rule scantlings.  No maintenance or repair is required. 

The condition of the coating overall is given as Good, but there is blistering of the coatings in the lower parts of the tank, on the inner bottom shell and inner bottom, including longitudinals and frames.  The coating in this area is therefore reported as Fair.

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