Intermediate Surveys

2.5.8 Annual survey - chemical carriers See 2.11.1.

2.5.9 Annual survey – general dry cargo ship See 2.12.1.

2.5.10 Annual survey – double hull oil tankers See 2.13.1.

2.5.11 Annual survey – passenger ships See 2.14.1

2.5.12 Annual survey – double skin bulk carriers See 2.15.1

2.6 Intermediate Surveys

2.6.1 At each intermediate survey for hull, in addition to all the requirements for annual survey in 2.5, the following additional applicable requirements in 2.6.2~2.6.4, 2.6.7~2.6.14 are also to be complied with depending on the type of ship.

2.6.2 Additional hull requirements for ships other than tankers, combination carriers and bulk carriers

(a) Ships of age over 5 years and up to 10 years: An internal general examination of representative sea water ballast tanks which include at least one peak tank and one deep/wing tank in way of cargo length area, excluding double bottom tanks, is to be carried out as follows:

(i) If such inspections reveal no visible structural defects, the examination may be limited to a verification that the coatings remain efficient.

(ii) Where no protective coating, soft or semi-hard coating or Poor coating condition without dealing with is found, the examination is to be extended to other ballast spaces of the same t ype.

(iii) In ballast tanks, where no protective coating, soft or semi-hard coating or Poor coating condition without dealing with is found, maintenance of class is to be made subject to the tanks in question being internally examined and gauged as necessary at annual intervals.

(b) Ships over 10 years of age

An internal general examination of all sea water ballast tanks is to be carried out as follows:

(i) If such inspection reveals no visible structural defects, the examination may be limited to a verification that the coatings remain efficient.

(ii) In ballast spaces other than double bottom tanks, where no protective coating, soft or semi -hard coating or Poor coating condition without dealing with is found, maintenance of class is to be made subject to the tanks in question being internally examined and gauged as necessary at annual intervals.

(iii) Also in case of double bottom tanks, annual surveys may have to carry out.

(c) In addition to the requirements in (a) and (b) above, the following requirement s are also to be complied with for ships excluding oil tankers and bulk carriers over 15 years of age .

An internal examination of at least one forward and one after cargo holds is to be carried out. For the ship which has only two cargo holds, either one cargo hold is to be examined.

2.6.3 Additional ESP hull requirements for oil tankers including combination carriers

(a) For weather decks, an examination as far as applicable of cargo, crude oil washing, bunker, ballast, steam and vent piping systems on weather decks as well as vent masts and headers is to be carried out. If upon examination there is any doubt as to the condition of the piping, the piping may be required to be pressure tested or thickness measured or both.

2.6 Intermediate Surveys

(b) Oil tankers of 5  age  10

(i) For tanks used for salt water ballast, an overall survey of representative tanks selected by the surveyor is to be carried out. If such inspections reveal no visible structural defects, the examination may be limited to a verification that the protective coating remains effective.

(ii) Where Poor coating condition, corrosion or other defects are found in salt water ballast tanks or where a protective coating has not applied from the time of construction, the examination is to be extended to other ballast tanks of the same type.

(iii) In salt water ballast tanks where a protective coating is found in Poor condition, it is not renewed, or where soft or semi-hard coating has been applied, or where a protective coating was not applied from the time of construction, the tanks in question is to be examined and thickness measurements carried out as considered necessary at annual intervals.

(c) Oil tankers of 10  age  15

(i) The requirements of the intermediate enhanced survey are to be to the same extent as the p revious special survey required in 2.7.5 and 2.1.5(a). However, pressure testing of tanks and cargo holds used for ballast is not required unless deemed necessary by the attending Surveyor.

(ii) In application of 2.6.3(c)(i) above the intermediate enhanced survey may be commenced at the second annual survey and be progressed during the succeeding year with a view to completion at the third annual survey.

(d) Oil tankers exceeding 15 years of age

(i) The requirements of the intermediate enhanced survey are to be to the same extent as the previous special survey required in 2.7.5 and 2.1.5(a). However, pressure testing of tanks and cargo holds used for ballast is not required unless deemed necessary by the attending Surveyor.

(ii) In application of (i) above the intermediate enhanced survey may be commenced at the second annual survey and be progressed during the succeeding year with a view to completion at the third annual survey.

(e) Survey planning

For ships age > 10 years, survey planning is to be carried out in accordance with 2.1.5 (a).

(f) Drydocking requirements

For ships age > 15 years, the ship is to be placed in a dry dock or upon a slipway and all items of 2.2.1 (a) through (f) are to be examined. The overall and close-up surveys and thickness measurements, as applicable, of the lower portions of the cargo tanks and water ballast tanks are to be carried out in accordance with the applicable requirements for Intermediate Survey, if not already surveyed.

2.6.4 Additional ESP hull requirements for bulk carriers (a) For bulk carriers of 5  Age  10

(i) Ballast tanks

(1) For spaces used for salt water ballast, an overall survey of representative spaces selected by the Surveyor is to be carried out. If such inspections reveal no visible structural defects, the examination may be limited to a verification that the coating remains effective.

(2) Where Poor coating condition, corrosion or other defects are found in salt water ballast spaces or where protective coating was not applied from the time of construction, the examination is to be extended to other ballast tanks of the same type.

(3) In salt water ballast spaces other than double bottom tanks, where a protective coating is found in Poor condition and it is not renewed, where soft or semi-hard coating has been applied, or where a protective coating was not applied from the time of construction, the tanks in question are to be examined and thickness measurement carried out as considered necessary at annual intervals. When considered necessary by the Surveyor, or where extensive corrosion exists, thickness measurements are to be carried out.

2.6 Intermediate Surveys

(4) In addition to the requirements in (1) to (3) above, areas found to be Suspect Areas at the previous special survey are to be overall and close-up surveyed.

(ii) Cargo holds

(1) An overall survey of all cargo holds, including close-up survey of sufficient extent, minimum 25% of frames, is to be carried out to establish the condition of shell frames including their upper and lower end attachments, adjacent shell plating, and transverse bulkheads in the forward cargo hold and one other selected cargo hold; and areas found to be Suspect Areas at the previous special survey.

(2) Where considered necessary by the Surveyor as a result of the overall and close -up survey, as described in (1) above, the survey is to be extended to include a close-up survey of all of the shell frames and adjacent shell plating of that cargo hold as well as a close -up survey of sufficient extent of all remaining cargo holds.

(iii) Extent of thickness measurements

(1) Thickness measurements is to be carried out to an extent sufficient to determine both general and local corrosion levels at areas subject to close-up survey, as described in 2.6.4(a)(i) and 2.6.4(a)(ii). The minimum requirements for thickness measurements at the intermediate enhanced survey are areas found to be Suspect Areas at the previous special survey.

(2) Where Substantial Corrosion is found, the extent of thickness measurements is to be increased in accordance with the requirements of Table I 2-4C.

(3) The thickness measurement may be dispensed with provided the Surveyor is satisfied with the close-up survey, that there is no structural diminution and the protective coating, where applied, remains effective.

(4) Where the protective coating in cargo holds is found to be in Good condition, the extent of close-up surveys and thickness measurements may be specially considered.

(b) For bulk carriers 10  age  15

(i) The requirements of the intermediate enhanced survey are to be to the same extent as the previous special survey required in 2.7.5 and 2.1.5(a). However, pressure testing of tanks and cargo holds used for ballast is not required unless deemed necessary by the attending Surveyor.

(ii) In application of 2.6.4(b)(i) above the intermediate enhanced survey may be commenced at the second annual survey and be progressed during the succeeding year with a view to completion at the third annual survey.

(c) For bulk carriers of age  15

(i) The requirements of the intermediate enhanced survey are to be to the same extent as the previous special survey required in 2.7.5 and 2.1.5(a). However, pressure testing of tanks and cargo holds used for ballast is not required unless deemed necessary by the attending Surveyor.

(ii) In application of 2.6.4(c)(i) above the intermediate enhanced survey may be commenced at the second annual survey and be progressed during the succeeding year with a view to completion at the third annual survey.

(d) Survey planning

For ships age > 10 years, survey planning is to be carried out in accordance with 2.1.5(a).

(e) Drydocking requirements

For ships age > 15 years, the ship is to be placed in a dry dock or upon a slipway and all items of Section 2.2.1 (a) through to (f) are to be examined.

The overall and close-up surveys and thickness measurements, as applicable, of the lower portions of the cargo holds and water ballast tanks are to be carried out in accordance with the applicable requirements for Intermediate Survey, if not already surveyed.

(f) Bulk carriers subject to IACS UR S31

2.6 Intermediate Surveys

Side shell frames of cargo holds bounded by a single side shell are to be assessed for compliance with the requirements of IACS UR S31 with revisions and steel renewal, reinforcement or coating, where required in accordance with IACS UR S31 with revisions is to be carried out.

2.6.5 Intermediate survey  machinery

(a) At each intermediate survey, all the requirements for annual survey are to be complied with.

(b) For tankers, in addition to the above, insulation resistance of electrical circuits in dangerous spaces is to be measured. Consideration may be given to accept the recent readings by the crew.

2.6.6 Intermediate survey – marine oil pollution prevention installations

Marine oil pollution prevention installations including operation tests as far as practicable are to be surveyed according to the IMO Resolution A.1053(27) – Guidelines for Surveys under Annex 1 of MARPOL 73/78 with its amendments. Surveys carried out by the National Authorities of the countries in which the ships are registered may be accepted as meeting these requirements.

2.6.7 Intermediate survey – liquefied gas carrier See 2.10.2.

2.6.8 Intermediate survey – chemical carrier See 2.11.2.

2.6.9 Intermediate survey – general dry cargo ships See 2.12.2.

2.6.10 Intermediate survey – double hull oil tankers See 2.13.2.

2.6.11 Intermediate survey – passenger ships See 2.14.2.

2.6.12 Intermediate survey – double skin bulk carriers See 2.15.2.

2.6.13 Barges - hull

In addition to the applicable requirements of 2.6.1, the intermediate survey is also to include the following:

(a) Salt water ballast spaces

In lieu of 2.6.1, an overall survey of three representative salt water ballast spaces including one rake tank and one upper wing tank, if applicable, and one additional space selected by the Surveyor.

(b) Deck cargo barges

At each intermediate survey after special survey No.3 – hull, in addition to the required salt water ballast spaces, at least two void spaces are to be examined internally, as considered necessary by the attending Surveyor.

(c) Dry cargo barges

At each intermediate survey after special survey No.3 – hull, in addition to the required salt water ballast spaces, at least two cargo holds are to be examined and dealt with, as deemed necessary by the attending Surveyor. Where extensive corrosion or structural damage is found, the remaining holds may also be required to be examined and dealt with.

(d) Oil/fuel oil tank barges and chemical tank barges - hull