Standard Dry Docking Services Specification

Company Name                 Technical Specifications         Item Nª/year


SHIP:          ITEM:              SPECIFICATION DESCRIPTION
MORUY     002                  DRY DOCKING SERVICES
AREA:                                 SYSTEM:
DRY DOCKING                 DRY DOCKING

OUTLINE:                           PERSON IN CHARGE:
Services                                Chief Engineer & Chief Mate

SITE:                                                                              
TESTS: According to the following description.
MATERIALS: Supplied by the Contractor


All DOCKING SERVICES are to be provided for full period of repairs except where stated, charges to include all necessary connections and disconnection.


1. DOCKING AND DOCKING DUES.
The following list of items are those referred to under dues, charges and services in the Contract.

1.1 Towage, boat hire for moving the vessel into dry-dock and out of dry-dock, from or to wharfage. Quote considering four shifts.

1.1.1 Hire or Employment of riggers for moving the vessel into dry-dock and out of dry-dock, from or to wharfage. Quote considering four shifts.

1.2.1 First day dry-dock dues; including docking/undocking.

1.2.2 Subsequent days dry-dock dues.

1.2.3 Wharfages dues and charges.

REMARKS:
Yard shall not start flooding the dry-dock before final approval by Owner's Representative off all hull service such as hull treatment (topside, boottop, vertical and flat bottom), seachests, propeller, bottom plugs, etc.

When refloating the vessel upon completion of all hull services, the flooding shall be stopped when the water level reaches the sea valves and a tightness inspection shall be carried out. Only after checking the tightness of all sea valves and/or openings or repaired parts, the flooding shall be continued.

The dock rental for the time spent in dock preparation before docking and restoration after undocking to be included in your quotation.

It is important that the side keel blocks are correctly positioned prior to the ship docking. The blocks are to be placed under the intersection of each cargo wing tank transverse and longitudinal bulkhead. A minimum of  9 blocks per side will be required. Your quote for docking and undocking dues and also your quoted time for repairs should include this requirement.

A copy of the ship's docking plan will be forwarded to the successful contractor

1.2.- BOTTOM PLUGS: QUANTITY: 25 Bottom Plugs.

a.- Bottom plugs are to be removed and refitted. Allow for refitting of cement lay. State unit price per bottom plug and quote considering removing / refitting 25 bottom plugs.

All necessary facilities as lighting, ventilation, etc. to be included in your quotation.

On completion of dry-dock work, bottom plugs are to be replaced on new grommets
and tightened up in the presence of the Chief Officer.

Immediately prior to undocking, an inspection of all plugs is to be carried out by a senior representative of the shipyard, accompanied by the Chief Officer who will have the plug plan.

b.- Allow for the renewal of four (4) in number drain bottom plugs and plug housings as per attached drawing.

1.3 Remove and subsequently replace 10 off nominated keel blocks or side keel blocks to permit Owner's Representative to examine hull plating.

1.4 Provide to supply 20.000 tons of ballast water, using 300 mm hoses, in order to allow vessel to get out of drydock..

2. SAFETY AND ACCESS

2.1 ACCESS: Provide safe access to main deck of ship by way of gangway and/or boarding towers.
4 times

2.2 FIRE WATCHMAN AND FIRE LINES.

Vessel's firelines on deck (two lines) to be connected to shipyard's fireline and maintaned under pressure, at 10.0 Kg/cm2 on deck, day and during the entire repair period.

2.2.1.- State unit price for connection/disconnection, allow for 6 connection/disconnection.

2.2.2.- Quote to maintain vessel's fireline underpressure per day and during all repair period.

2.2.3.- Fire watchman to be provided by Shipyard, 24 hours per day, during the entire repair period.

State price fire watchman/24 hours and quote according to the Safety Rules of The Shipyard the necessary fire watchmen during the entire repair period.

3. ENGINEERING SERVICES

The following services are to be supplied during the whole repair period.

3.1 Megger Test

Ensure that all electrical equipment in the machinery spaces is kept dry . Megger test in the machinery spaces only should be done on vessel's arrival at Shipyard and four in number copies of the readings to be submitted to the Owner's Representative. Any low readings are to be reported to Owner's Representative who will issue the necessary instructions. A final set of readings is to be taken and submitted to the Owner's Representative after repairs are completed. All fuses and connections are to be properly secured on completion tests.

3.2 SHORE POWER

Shore power (440 V A.C. 60 Hz - 3 phases) to be supplied for vessel's use:
3.2.1.- State unit price per KW.h and connect/disconnect.
3.2.2.- Quote assuming 6.000 KW.h per day being supplied during the entire repair period
3.2.3.- 4 connections/disconnection.

REMARKS:

In case of lack of shore power supply, a diesel generator to be promptly arranged for vessel's use (300 KVA) at same rates.

Megger readings to be verified by Ship's Electrician on each connection and disconnection.

3.3 COOLING WATER

Cooling fresh water to be supplied for air conditioning (Engine Control Room and Central Unit) and provisions plant.

Additionally hoses to be supplied for outlets of a. m. coolers

3.3.1 State unit price for connection/disconnection.
3.3.2 State unit price per hose / day. (inlet and outlet)
3.3.3 Quote assuming 3 hoses during the entire repair period and 9 connections/disconnection, for air conditioning and provisions plant.
3.3.4 State Unit Price per hose per day Considering Sea Water.

3.4 AIR COMPRESSORS.

Dry and oil-free compressed air at a minimum pressure of 7 Kg/cm2. to be supplied for vessel's use, from a mobile air compressor set or fixed shore installation, if required.

3.4.1 State unit price for connection / disconnection.
3.4.2 State unit price to supply from shore main (per line/per day).
3.4.3 Quote assuming 8 connections / disconnection and supply for 2 lines during the entire repair period.

3.5 HEATING LAMPS

Heating lamps (250 Watts each) to be installed in electric motors.

3.5.1 State unit price for connection / disconnection.
3.5.2 State unit price per lamp/day including power supply.
3.5.3 Quote assuming 30 lamps during the entire repair period.

4. DOMESTIC SERVICES

The following services are to be supplied during the entire repair period:

GARBAGE REMOVAL:

4.1.1.- State unit price per bin per day
4.1.2.- Quote assuming 2 bins per day during the entire repair period.

CRANEAGE: Provide Craneage for the ship's use for loading domestic stores and spare gear together with assistance of riggers for handling store, etc.;

4.2.1.- State Unit price per hour
4.2.2.- Quote 10 hour during the entire repair period.

4.3 GENERAL CLEANING.

4.3.1 Vessel (Main deck, Superstructure decks, Cargo and Ballast Tanks, Accommodations, Engine Room and Pump Room) to be maintained clean during the entire repair period. All dirt and debris arisen from repair and blasting to be removed, landed ashore and disposed of. Oil spills to be chemically cleaned, using yard's chemicals.

REMARK:

The standard of cleanliness of each every space to be at least as clean as before repairs commenced. Brush clean is not enough. It is expected that all hand and footmarks are removed from all surface of ceilings, bulkheads, walkway, pipes and equipment and machinery.

Final cleaning of the vessel to be approved by Master and Chief Engineer.

4.4 FRESH WATER (POTABLE WATER)

Yard to quote price for supply Fresh Water, assuming 2 connections / disconnection and consumption of 20 tons per day during the entire repair period plus 500 tons on completion of repairs.

4.5 TELEPHONE

Provide direct telephone connection to yard's communication system to allow ship to local emergency services. Clear and adequate instructions to be displayed to the telephone.

4.6 OFFICE

Provide an office with telephone and internet services to local and international calls.

4.7 ACCOMMODATION HEATING

One portable boiler for steam supply to be provide for accommodation heating and heat water.
4.7.1 State unit price for connection / disconnection.
4.7.2 State unit price per hour for steam supply including assistance.
4.7.3 Inform minimum charge for the entire period of use.
4.7.4 Quote assuming use from 06:00 AM to 08:00 AM and from 04:00 PM to 06:00 PM.

GENERAL REMARK:

If any service above mentioned do not have charges, please indicate in your quotation.

A Guide for Statutory Inspections

Review and Download the gudie in PDF

Nitrogen Oxides (NOx) Regulation 13.7; Marpol Annex VI; Pre-2000 Engines.

IMO at the 58Th session of the MEPC adopted MEPC 176(58) and introduce in 2008 Annex VI amendments, The revised MARPOL ANNEX VI become in to force on 01/07/2010, and under this amendments Tier I standards become applicable to existing engines installed on ships built between 1st January 1990 to 31st December 1999, with a displacement ≥ 90 litre per cylinder and rated output ≥ 5000 kW, subject to availability of approved engine upgrade kit. Before commonly known, as NOx control on Pre-2000 engines.


This NOx control on Pre-2000 engines will generally affect only the main engines on such ships, the 90 litre/cylinder criteria represents, for example in current medium speed engine designs, engines with a bore of 460 mm and above.

The amendments require on these engines: Either the installation of a certified “Approved Method”, not necessarily approved by the ship’s flag State but for any other administration on behalf of IMO that has certified an “Approved Method” which results in an emission value no higher than the relevant Tier I level for that particular engine model, rating and duty or the engine has been certified that operates within the limits set forth Tier I, II or III.

If compliance is demonstrated through The Approved Method, it must be applied no later than the first renewal survey which occurs more than 12 months after deposition of the advice to IMO.


However, if the ship owner can demonstrate that the Approved Method is not commercially available, by vessel’s flag administration confirmation, at that time then it is to be installed no later than the next annual survey after which it has become available. Given within regulation 13.7 are constraints on the Approved Method that limit its cost and detrimental effects on engine power and fuel consumption.

An approved Method shall include an approved Method File which accompanied the engine during its all life and where is stated the engine on board verification to confirm compliance during successive surveys.

Implementation of MARPOL VI, regulation 13.7 must be achieved by following the next steps:


• Ship constructed between 01/01/1990 and 31/12/2000 and the engine power > 5000 Kw and   displacement > 90 litres per cylinder?
No, no further action required.
Yes, engines details shall be added to the supplement attach to IAPP Certificate.

• Engine has been certified as being Tier I, II or II?
Yes, details to be added to the supplement. Engine in compliance with Reg. 13.7
No, below alternatives are possible.

• Engine has an Approved Method (A.M.) available?
No, no further actions required.
Yes, below alternatives are possible. However, Supplement must be updated as A.M. exists.

• Is vessel at first renewal survey, which occurs 12 month or more after notification to IMO and it was installed?
Yes, add to supplement that A.M. exists & A.M. Installed. Now vessel is in compliance with Reg. 13.7
No, below alternative is possible

• Is the vessel at next Annual Survey and Flag confirmed that the A.M. is not commercially available?
Yes, add to supplement that A.M. exists & A.M. no commercially available.
No, Flag shall be contacted and certificates withdraw “no in compliance”.

Emergency Position Indicating Radio Beacon (EPIRB)

Quantity Required: 1 pcs

Battery Life: 48 Hrs

Operating Temperature: -40ºC to +55ºC

An Emergency Position Indicating Radio Beacon (EPIRB) is used to alert search and rescue services in the event of an emergency. It does this by transmitting a coded message on the 406 MHZ distress frequency. This message is relayed via satellite and earth station to the nearest rescue co-ordination center.

EPIRB works with the Cospas-Sarsat polar orbiting satellite system, which provides true global coverage. The system has an alert delay of typically 45 minutes dependant to when the satellites come into view on the horizon. The satellite can determine the position of the EPIRB within 5 km (3 miles) and the coded message identifies the exact vessel to which the EPIRB is registered. This information allows the rescue services to eliminate false alerts and lunch an appropriate rescue.

The EPIRB has a secondary distress transmitter. This transmits on 121.5 MHZ and used for “homing” purposes. When the rescue services get close, this allows them to direction to find on the signal. To cater for searches at night, the EPIRB has a bright flashing light that aids final visual location.

 

Operational procedure

There are two way for activation of the EPIRB, one is manually and one is automatic thru HRU.

If the vessel is sinking and there is time to fetch the EPIRB then this should always be done. Remove the EPIRB from the mounting bracket. Once the liferaft is in the water, uncoil the lanyard and tie it to the liferaft, then throw the EPIRB overboard so that it floats next to the liferaft. The EPIRB will operate because its sea switch will activate, or you can manually activate it by sliding the door to the left and then momentarily pressing the ON button. (The on button is hidden behind a sliding door, which protects it from accidental activation. The sliding door has a temper seal to show if the EPIRD has been activated before.)

If there is not time to fetch the EPIRB. The EPIRB is supplied in a plastic enclosure. This is more than just a protective housing, it contains a sprung loaded lever, which automatically pushes the enclosure lid off and releases the EPIRB if your vessel sinks. A device called a Hydrostatic Release Unit (HRU) controls this automatic ejection. As the vessel sink, the enclosure fills with water. The HRU contains a blade, which is released due to water pressure acting on a diaphragm. Before it reaches a depth of 4 meters (13 feet), the HRU will operate and cut the plastic rod, releasing the spring coil. The spring pushes the EPIRB and enclosure lid outward. As the lid pivots off it disengages from the screw head that helped hold it in place.

The lid weighted so it rolls over and falls away. As the EPIRB floats away from the lid, it moves out of range of the magnet. Once away from the magnet its sea switch becomes armed. The EPIRB then floats on the surface with its strobe light flashing. 

When activated the EPIRB will start flashing immediately. It will make any distress transmissions for the first 50 seconds. This gives you a chance to turn it off, if you activated it accidentally. During the first 50 seconds the red lamp comes on continuously. When the red lamp starts to flash, the 50 seconds is over and distress transmissions have started.

To ensure the sea switch operates properly in rough seas, if has a built-in time delay. It has to be wet for at least 2 seconds before it will activate and it has to be dry for at least 8 seconds before it will de-activate.



New Amendments to SOLAS V/19; "BNWAS"

IMO resolution MSC.282(86) amended SOLAS Chapter V by adding two new requirements; "BNWAS" & "ECDIS". The dead line depend upon ship type, gross tonnage and keel laying. In this article, I will be dealing with Bridge Navigational Watch Alarm System (BNWAS).

The purpose of BNWAS is to monitor bridge activity and detect operator disability which can lead to marine accidents. The system alert the Master or another qualified Navigation Officer automatically if for eny reason the Officer on Watch (OOW) becomes incapable to perform his duties. This is achieved by a device with a serie of alarms, movement sensor and indications which are activated to alert in first instance (Pre-Warning) the OOW and, if he/she is not responding, then to alert (Alarm) the Master or another qualified OOW.

Applications Dates:

The system shall comply with following requirements:
 1.- Operational Modes:

• Automtic (Brought into operation whenever the ship is heading or track control system is activated)
• Manual ON (In operation constantly)
• Manual Off (Does not Operate under any circusntances)
• The system shall be provided with safety means to ensure access to control are limit to the Master (Key; Password; ETC)

2.- Sequence of indications and Alarms

• The system should remain counting for a period between 3 to 12 min, prior any indication.
• At the end of the settle period, pre-warning indication (visible only) at the bridge.
• If not reset, after 15 sec (First Stage) alarm shal be activated only in the bridge.
• If not reset, after another 15 sec (Second Stage) a remote audible alarm in the back up officer's and/or Master location shall be activated.
• If not reset, after 90 sec counted from the second 15 sec (third Stage) a remote audible alarm  at the locations of further crew's members shall be activated.
• In vessel other than passengers, the second or third stage alarm sound all at same time, the third stage alarm may be omitted.

3.- Reset Funtions

• Should not be possible to reset or cancel any alarm from any other place than the bridge.
• Should , by a single operator action, cancel the visual and all audible alarms and initiate a new dormant period. If rest is activated before the period is over new dormant period shall initiate.
• To initiate a reset funtion an imput by a single operator (OOW) action is required, it may be generated by a reset device or movement sensors distribiute on bridge.
• Continious activation of reset funtion should not prolong the dormant period.

4.- Emergency Call.

• May be provided to activate second and third stage alarms in case assistance is need on the bridge.

5.- Power Supply:

• From Main and Emegency, with automatic change over.
• Power Failure alarm shall be provided
• Power Failure of any navigational equipment shall not affect to any other piece of navigational equipment.
• Vessel with IBS notation additional power suply shall be provided (UPS)

IMO, Improving the Safety in Bulk Carriers.

To answer this question we have to go back to 1990s, when following a series of losses of Bulk Carriers happened. A study was carried out by IACS at the request of IMO, the study revealed that if a Bulk Carrier is flooded in the forward hold, the transverse bulkhead between the two foremost cargo hold may not withstand the pressure that result from the cargo and the water and the transverse bulkhead may collapse causing progressive flooding of the cargo holds and the vessel will sink in minutes, which does not give time to crew to abandon the ship.


In 1997, IMO adopted new SOLAS Regulation containing specific safety requirements to improve the safety of Bulk Carriers, Chapter XII – Additional Safety Measures for Bulk Carriers, entering in to force on 01 July 1999.

At the very first stage the new Chapter XII stated that:

• New Bulk Carriers of 150 m or more in length (built after 01/07/1999) carrying cargoes of 1000 Kg/m3 and above should have sufficient strength to withstand flooding of any one cargo hold.
• Existing Ships of 150 m or more in length (Built before 01/07/1999) carrying cargoes of 1780 Kg/m3 and above, the transverse watertight bulkhead between the two foremost cargo holds and the double bottom of the most foremost cargo hols should have sufficient strength to withstand flooding.

Under this new chapter XII, new criteria for damage stability and structural strengthening was introduced (URS 12, 17, 18, 20, 21, 25, 27…..), allowing surveyors to take into account restrictions on the cargo carried in considering the need for, and extend of strengthening of the transverse watertight bulkhead and double bottom. These restrictions can come, on the distribution of the total cargo weight between cargo holds and restrictions on the maximum deadweight. When such restrictions are imposed, them the ship shall be marked with a solid equilateral triangle, having sides of 500 mm and 300 mm bellow deck line, permanently in P&S sides at amidships.

Also loading instrument become mandatory, new Enhanced Survey Program was established to detect possible structural weakness and cargo handling practices were improved.

In December 2002 new amendments to chapter XII were done and included chapter XII/12, the installation of high level alarms to detect water ingress and new chapter XII/13 added with regard availability of pumping systems to drains any space forward collision bulkhead, among other strengthening of vent fittings and small hatches on forward decks.

In December 2004, when IMO at the 79th session of the Maritime Safety Committee adopted resolution MSC. 179(79)“Adoption of Amendments to SOLAS, 1974”. The existing chapter XII (1997) “Additional Safety Measures for Bulk Carriers” was reviewed and more specifically Regulation 8 amended and new Regulation 14 added.

The booklet required under Reg. 8 (SOLAS VI - 7.2) shall be endorsed by the administration or on its behalf, to indicate SOLAS XII regulation 4, 5, 6 and 7, as appropriate, are complied with. The booklet to be prepared by Ship’s Crew based in the info available on board from Stability Data, Ballasting and Deballasting Rates and capacities, Maximum Allowable load per unit of surface area of the tank top plating, Maximum allowable load per hold, Loading & Unloading instructions, any restriction imposed on the most adverse operating condition and Maximum permissible Shear Forces and Bending Moments and submitted for revision and approval, as above stated.

Any restriction as consequences of what is stated under Reg. 6 & 14 shall be recorded in the booklet and be permanently marked at amidships section with a Solid Triangle as well as. The ship trim and stability (loading) manual is to be endorsed with the restriction, in accordance reg.14 “The ship shall not sail with any hold loaded to less 10% of the hold maximum allowable cargo weight”

Therefore Reg. 14 apply only to BC of 150 m and more in length, single hold skin, carrying cargoes of more than 1,780 kg/m3 in alternate loading condition, were contracted for construction before 01 July 1998 or constructed before 01 July 1999 and when they reach 10 years and they are normally assigned with ESP notation.

The Amended SOLAS Chapter XII, finish in 14 regulations which are:
1. Definitions
2. Application
3. Implementation
4. Damage Stability requirements applicable to Bulk Carriers
5. Structural Strength of Bulk carriers
6. Structural and other requirements for bulk carriers
7. Survey and maintenance of bulk carriers
8. Information on Compliance with requirements for bulk carriers
9. Requirements for bulk carriers not being capable of complying with regulation 4.3 due to the design configuration of their cargo holds.
10. Solid Bulk cargo density declaration
11. Loading Instrument
12. Hold, ballast and dry space water ingress alarms
13. Availability of pumping system
14. Restrictions to sail with any hold empty

Keyless Propeller Underwater Repair

During Vessel’s hull cleaning, damage in one propeller’s blade (A) was detected and identified as a crack of 60 cm length and located between 0.8 R and 0.7 R. As a temporary measure crack arresting hold were drilled to avoid crack growth while repairs were done.

The defect was stated to have been caused by material fatigue after straightening the four blades after grounding, may be caused as a result of non proper pre-hating for straightening or post heating for stress relief.

The propeller was identified as a Ni-Al-Bronze (Alloy Grade Cu 3), keyless, four (4) blade, 5800 mm Diameter and 14804 Kg.

Severity zones in a Propeller’s Blade are identified as A, B & C, where zone A is the area in the pressure side that goes from the roots to 0.4R, zone B goes up to 0.7R on both side and exclude zone A in pressure side and zone C includes the areas out side 0.7R on both sides. Welding repairs in zone “A“ are not permitted and in zone B and C till certain extend.

In view of the delivery time involved for a new propeller, a temporary repair was achieved which consisted of the following steps:

• Removal of crack, by cutting and shipping off.
• Clean/Polish and visual inspection for other damages.
• Cutting to be minimized.
• Straightening if necessary (It wouldn’t necessary).
• Grind and smooth the edges.
• Final dimension check of blades.
• Opposite blade to be crop out in a similar proportion, grind and smoothening as necessary with the purpose to keep the propeller balanced and therefore to avoid vibrations.

After Polishing of the propeller blades and propeller boss no others defects were observed and on completion of the repairs, the two removed sections were weighing and each resulted with a weight of 54 Kg and 58.5 Kg for blade “A” and blade “C” respectively. Before represents less than 1 % of the total propeller weight and both pieces resulted with a very close weight which is the aims when doing this type of repairs.

 

Sea trials were carried out at M/E Manoeuvring Speed and M/E Full Ahead. In both cases not abnormal vibrations detected, good vessel’s manoeuvring reported, M/E parameter within range, not overload alarm activated in the M/E electronic governor, not Surge in the Turbocharger observed and Vessel Speed 14.5 Kn.

Once the vessel come back under operations it is important to keep monitoring its performance and after certain running hours under service a re-inspection of the propeller to verify remains free of damages and therefore fit for its purpose may imply that the repair can be considered permanent.