MARINE SURVEY

DOCKING SURVEY
Inspections during Docking Survey
• The shell plating is to be examined for excessive corrosion, deterioration due to chafing or
contact with the ground and for undue unfairness or buckling.
• Special attention is to be given to the connection between the bilge strakes and the bilge keels.
• The clearances in the rudder bearings are to be measured. Where applicable, pressure testing of
the rudder may be required if deemed necessary.
• The sea connections and overboard discharge valves and cocks and their attachments to the hull
are to be examined.
• The propeller, stern bush and sea connection fastenings and the gratings at the sea inlets are to be
examined.
• The clearance in the stern bush or the efficiency of the oil glands is to be ascertained.
• When chain cables are ranged, the anchors and cables are to be examined by the Surveyor.
Preparations before Dry-docking
• Prepare Repair Specifications in advance for budgeting and inviting quotations
• Pipe Lines
• Structural steel renewal, for which plate thickness gauging may be required.
• Overhauling of Mooring Equipment.
• Special servicing requirements
• Overhauling and testing of Cargo Gear ( cargo pumps if the vessel is a tanker)
• Prepare Spare Parts
• Plan and carry out Hold/tank cleaning/gas freeing before arrival
• Check and confirm availability of special tools, instruments and manuals on board.
• Confirm availability of drawings like Docking Plan, GA etc. on board.
Management Involvement
• Select repair yard based on vessel’s trading pattern.
• Invite quotations and negotiate prices.
• Issue instructions to Master/Chief Engineer regarding: Cargo/ballast/fuel oil
quantity/distribution, Calculation of arrival drafts and trim, Fire/ Safety precautions.
Activities In Dry dock
• Bottom Inspection/corrective action
 MARINE SURVEY

• Bottom painting
• Anchor cable ranging and painting.
• Cleaning and painting of chain locker.
• Echo-sounder and speed log checks
• MGPS and ICCP checks
• Sea chests/filters cleaning/painting
• Storm valves overhauling
• Rudder pintle and jumping clearances checking
• Rudder pressure testing/internal painting if required
• Poker gauge reading (Propeller drop)
• Stern seal leak check
• Propeller polishing/repairs if required.
• Tail shaft survey, if required.
• Bottom plugs removal/re-fitting as required
Safety in Dry Docking
• Warning notices
• Fire line under pressure/ fire fighting appliances kept ready
• Means of communications established
• Usage of galley and WCs restricted as required.
• Hot work permissions/precautions
• Earthing of vessel
Checks before/during Flooding in Dry Docking
• Sea connections, sea chests checking
• Bottom plugs fitting/leak test by vacuum
• Any other hull opening
• Removal of masking of anodes
• Securing of rudder fittings, propeller nut/cone fitting, rope guard and net-cutter fitting
• Ensuring ballast/weight distribution same as when docked
• After commencement of flooding, when the water level has risen enough to cover all shipside
opening, flooding needs to be stopped and all ship side connections checked for any leakage.
After confirming that all are satisfactory, flooding is resumed and the vessel floated.
 DOCKING SURVEY CHECKLIST
Name of the Ship : IR. Number :
Port of Registry : Report No. :
SHELL PLATING
Side, bottom, stern & bow plating examined to confirm that these are in satisfactory condition
SHELL OPENINGS
Plating, fittings & connection in way of shell openings examined to confirm that these are in satisfactory condition
STERN FRAME & RUDDER
Stern frame & rudder examined to confirm that these are in satisfactory condition. The clearance in the rudder bearings
satisfactory.
RUDDER BEARING/BUSH CLEARANCES
{Attach the additional notes mentioning rudder bearing/bush clearance here. Recommended to mention the values in the below prescribed
format
Neck Bush: ----------------------------------------------------------------------------------
Pintle Bush: ---------------------------------------------------------------------------------}
SEA INLETS AND DISCHARGES & OTHER OPENINGS
i) Sea inlets and discharge openings in shell and particularly the shell plating in way liable to excess corrosion examined to
confirm that these are in satisfactory condition.
ii) Confirm that the gauging requirements of shell plating in way of OBD opening for vessels from SS No. IV onwards carried out.
PROPELLERS
Propellers checked for erosion, pitting, cracking of blades or possible contact damage. Fastenings & gratings examined to
confirm that these are in satisfactory condition
CONTROLLABLE PITCH PROPELLERS
For controllable pitch propellers, fastenings and tightness of hub and blade sealing examined to confirm that these are in
satisfactory condition.
OTHER PROPULSION
Exposed parts of steerable propellers, azimuth thrusters, side thrusters, vertical axis propellers and water jet units are to be
examined for satisfactory condition. Confirm that manufacture recommended routines, if any have been carried out
satisfactorily.
(Note: If the underwater housing/shaft is not made of corrosion resistant material & exposed, checking of sealing’s and shaft to
be carried out as per manufacture instructions).
SEA CHESTS & GRATINGS
i) Sea chests and their gratings, sea connections and overboard discharge valves and cocks and their fastening to the hull and
sea chests examined to confirm that these are in satisfactory condition.
ii) Confirmation that the corrosion protection system in way of sea chest (Anodes etc.) is in satisfactory condition.
iii) Confirm that the gauging of sea chest plating carried out (for vessels from SS No. IV).
(Valves and cocks need not be opened up more than once in a special survey period unless considered necessary by the
surveyor)
CONDITION OF OIL GLAND/S
Oil gland/s (approved type) found tight when examined under a head of oil
STERN BUSH CLEARANCE / POKER GAUGE READINGS
Confirmation that stern bush clearance / poker gauge readings recorded below are considered to be satisfactory.
{Attach the additional notes mentioning stern bush clearance / poker gauge readings here. Recommended to mention the values in the below prescribed format
Previous readings (date:----): -----------------------------------------------------------------------------------------------------------------
Present readings (date:----): -----------------------------------------------------------------------------------------------------------------}
GENERAL CONDITION
Examination of the ship as far as practicable in order to confirm her general condition is satisfactory.
CHAIN CABLES
The chain cables are ranged and the anchors and the chain cables are to be examined (At special survey no. II and subsequent
special surveys, the chain cables are to be gauged)
DREDGERS
Where the docking survey is part of the special survey, examination of hopper bottom doors and accessories such as hinges,
actuating rods, hydraulic systems to confirm these are in efficient condition.
HOSE TEST OF HATCH COVERS FOR CONTAINER SHIPS

Condition to be reported using number code as follows:

1. When examined found to be satisfactory and/or examined/tested satisfactory and/or confirmed arrangements exist in satisfactory condition. No repairs
considered necessary this time.
2. Repairs now recommended and were carried out satisfactorily. After repairs found to be satisfactory and/or examined / tested satisfactorily and/or
confirmed arrangements exist in satisfactory condition.
3. Repairs now recommended and remain outstanding.
4. Opportunity to examine/test was not provided this time. Remains outstanding.

Form No.: CL-DS (Rev.02) Page 1 of 3

Checking the effectiveness of sealing arrangements of all hatch covers by hose testing or equivalent.
DOCKING SURVEY AS A PART OF THE INTERMEDIATE OR SPECIAL SURVEY
When survey in dry dock is part of an intermediate or special survey, confirmation that, overall and close up surveys, thickness
measurements and repairs applicable to the lower portion of cargo spaces and ballast tanks (i.e. parts below light ballast water
line) has been completed in the dry dock.
MAJOR REPAIRS TO MAIN /STEERING GEAR & CONTROLS
Trial of relevant machinery item (proplusion and steering) including sea trial as considered necessary by the surveyor to verify
proper operation of the machinery.
RECOMMENDATION
Docking survey has been completed satisfactorily and the date may now be assigned.
ENDORSEMENT OF SAFCON CERTIFICATE
On satisfactory completion, SAFCON certificate has been endorsed as applicable towards bottom survey.

CHECKS TOWARDS IN-WATER SURVEY NOTATION

UNDER WATER COATING
Confirmation that underwater portion of the hull applied with a suitable coating of adequate thickness to last more than the
scheduled intervals between consecutive dry dockings and applied in accordance with manufacturer’s recommendations .
{Attach the additional notes mentioning underwater coating, valid for how many months here}
HULL MARKING
Confirmation that hull marking including marking on the propeller blades for identification are clear and visible. No
modification done to the initial arrangement concerning underwater portion of the hull and its attachments.

CHECKS FOR TAILSHAFT CONDITION MONITORING (TCM)

TAILSHAFT CONDITION MONITORING RECORDS
1) Verification of on board records and confirmation that following monitoring has been carried out and results are satisfactory:
a) Lubricating oil analysis at intervals not exceeding 6 months, including the following parameters as a minimum:
- water contents;
- chloride contents;
- contents of bearing metal particles;
- oil ageing (resistance to oxidation).
b) Lubricating oil consumption.
c) Bearing temperature.
d) Low level alarm on stern tube lubricating oil gravity tank (For vessels with SYJ notation).
FOR SHAFTS WITH KEYED PROPELLERS AT EVERY 5 YEARLY PERIOD
For shafts with keyed propellers, examination of tailshaft cone, key and keyway, including examination by an efficient crack
detection method of the after end of the cylindrical part of the shaft and one-third of the length of the taper from the big end
to confirm these are in satisfactory condition;
FOR SHAFTS WITH PROPELLERS MOUNTED KEYLESS AT EVERY 5 YEARLY PERIOD
For shafts with propellers mounted keyless, verification of the tightness of the propeller hub (propeller hood, fore gland) to
confirm satisfactory condition.
FOR SHAFTS WITH CONTROLLABLE PITCH PROPELLER MOUNTED ON SOLID FLANGE COUPLING AT EVERY 5 YEARLY
PERIOD
i) Verification of tightness in way of blade glands and distribution box to confirm these are in efficient condition.
ii) Verification of hydraulic oil analysis report of the sample drawn immediately prior (not more than three months) to confirm
satisfactory condition.
iii) Working test of the propeller blade movement, as far as possible to confirm satisfactory condition.

ADDITIONAL DOCKING SURVEY REQUIREMENTS TOWARDS POSTPONEMENT

SEA WATER LINES
Visual examination of the seawater main line and any other seawater line having a direct connection to the shell plating.
STEERING GEAR
Functional test and visual examination of the steering gear and rudder trunk space (if fitted).
Condition to be reported using number code as follows:
1. When examined found to be satisfactory and/or examined/tested satisfactory and/or confirmed arrangements exist in satisfactory condition. No repairs
considered necessary this time.
2. Repairs now recommended and were carried out satisfactorily. After repairs found to be satisfactory and/or examined / tested satisfactorily and/or
confirmed arrangements exist in satisfactory condition.
3. Repairs now recommended and remain outstanding.
4. Opportunity to examine/test was not provided this time. Remains outstanding.

Form No.: CL-DS (Rev.02) Page 2 of 3

STERN TUBE LOG BOOK ENTRIES
Verification of logbooks for stern tube bearing operating parameters and oil consumption (for oil lubricated stern bearings).
BILGE PUMPING ARRANGEMENT
Examination and verification of bilge pumping arrangement.
SOUNDING RECORDS
Verification of bilge and tank sounding records.
MASTERS DECLARATION
Confirmation from Master that the vessel did not sustain any damage due to grounding, contact, weather. If any damage
occurred, verify examine and record same.

Condition to be reported using number code as follows:

1. When examined found to be satisfactory and/or examined/tested satisfactory and/or confirmed arrangements exist in satisfactory condition. No repairs
considered necessary this time.
2. Repairs now recommended and were carried out satisfactorily. After repairs found to be satisfactory and/or examined / tested satisfactorily and/or
confirmed arrangements exist in satisfactory condition.
3. Repairs now recommended and remain outstanding.
4. Opportunity to examine/test was not provided this time. Remains outstanding.

Form No.: CL-DS (Rev.02) Page 3 of 3