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Differentiate between annual, intermediate, renewal, damage and repair surveys?

Annual Survey :-
  1. The purpose of the annual survey is to do the general inspection of items related to a particular certificate to ensure that they have been maintained and remain satisfactory for service for which the ship is intended
  2. Annual surveys are to be carried out within a window from three months before to three months after each anniversary date.
  3. It is carried out by a class surveyor. At the time of annual surveys, the ship is generally examined. The survey includes an inspection of the hull, equipment, and machinery of the ship and some witnessing of tests, so far as is necessary and practical in order to verify that, in the opinion of the attending surveyor(s) the ship is in a general condition which satisfies the Rule requirements.

Intermediate Survey :-
  1. Intermediate survey is a survey including visual examinations, measurements, and testing as applicable, of the hull and equipment, machinery and systems, in order to confirm that the ship complies with the relevant rule requirements and is in satisfactorily maintained condition.
  2. The required examinations, measurements, and testing shall be carried out before the intermediate survey is regarded as completed.
  3. An intermediate survey is to be carried out within the window from three months before the second to three months after the third anniversary date.
  4. The intermediate survey includes examinations and checks on the structure as specified in the Rules to verify that the vessel is in compliance with the applicable Rule requirements. The Rule criteria become more stringent with age.
  5. According to the type and age of the ship the examinations of the hull may be supplemented by thickness measurements as specified in the Rules and where deemed necessary by the attending surveyor.

Renewal Survey :-
  1. Renewal survey is a major survey including visual examinations, measurements and testing of the hull and equipment, machinery and systems,in order to confirm that the ship complies with the relevant rule requirements and is in satisfactorily maintained condition.
  2. Class renewal surveys/special surveys are carried out at five-year intervals. However, consideration may be given by the Society, in exceptional circumstances, to granting an extension for a maximum period of three months after the due date. In such cases the next period of class will start from the due date for the previous class renewal survey before the extension was granted.
  3. The special survey may be commenced at the 4th annual survey and be progressed with a view to completion by the 5th anniversary date.
  4. The class renewal surveys/special surveys include extensive examinations to verify that the structure, main and essential auxiliary machinery, systems and equipment of the ship are in a condition which satisfies the relevant Rules. The examinations of the hull are generally supplemented by thickness measurements and witnessing of tests as specified in the Rules, and as deemed necessary by the attending surveyor, to assess that the structural condition remains effective and to help identify substantial corrosion, significant deformation, fractures, damages or other structural deterioration.

Damage Survey : -
  1. Damage surveys are carried out in the event of damage which affects or may affect the class of the ship.
  2. It is performed to access the extent of damage sustained, to compile a list of recommended repairs and estimated cost to return the vessel to its condition before the incident.
  3. It is non periodic survey and required by insurance companies when a claim has been submitted .
  4. Damage survey is usually commissioned by an insurance company as part of a claim investigation to establish the probable cause and extent of damage.

Repair Survey :-
  1. Following a damage defect or break down any repair carried out to the hull, equipment, and machinery is assessed by a class surveyor.
  2. The surveyor ascertains the status of the vessel to determine if it has been returned to a condition that is in compliance with the applicable Rule requirements.
  3. Where repairs are carried out at a place where the surveyor services are not available, survey must be carried out at the earliest opportunity thereafter.
  4. Damages or repairs required by the surveyor to be re-examined after a certain period of time are also covered by an appropriate recommendation/condition of class.


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