ENHANCED SPECIAL SURVEY

	Required for: Tanker:Mandatory for crude oil carrier 20,000DWT & above. Product tanker of 30,000DWT and above. Bulk Carriers: No limit.
	As the age increase the survey becomes more stringent.
	Required as per regulation-2, CH-XI-I of SOLAS convention.

Aspects of ESP

	It is basically to detect structural weakness & area of corrosion.
	It has been in forced since 1st July 1993 for oil tankers & bulk  carriers including OBO.
	It commences at 4th annual survey and progressed during succeeding year with a view to complete by 5th anniversary.
	Additionally require internal examination; close up survey; Thickness measurement report etc.
	A specific survey program in written format must be worked out in advance.
	Dry docking is required to complete a vessel's special survey of hull.
	All tank coatings are to be evaluated periodically.
	Tanks having poor coating conditions to be evaluated more frequently.
	Close up survey to be carried out to check the condition of critical members of ships structure. This includes:

	Transverse web frame rings.
	Deck and bottom transverses.
	Transverse and longitudinal bulkheads.
	Girders and stiffeners.
	Cargo and ballast tanks and cargo hold stiffening members.
	Forward cargo hold framings.
	Cross deck structures and hatch covers.
	Coamings in bulk carriers.
	Surveyor may extend close up survey if deemed necessary.

Areas of substantial corrosion (which includes areas have a wastage of greater than 75% of the allowable margin) require further thickness and an extended close up survey.

	Examination should be sufficient to discover corrosion, significant deformation, fracture, Dam-ages etc.
	Enhanced survey carried out During Periodical Survey. During annual survey & Intermediate Enhanced survey.
	It covers all cargo spaces, ballast tanks, tunnel, cofferdam, void space, deck & outer hull.
	After survey the administrator will give an endorsed condition evolution report to the owner n a copy to be placed on board.

Vessel to keep record of

	Thickness measurement report.
	Survey report
	Executive hull summary.