1. Anchor Handling Tug Supply Vessel
C. HARSHA NA07B007
DEEP SUNDAR NA07B012

2. AHTS
Offshore supply vessels specially designed to provide anchor handling and towage services for semi submersibles, platform jackets, barges and production modules/vessels.
Some Anchor handling tug supply (AHTS) vessels are equipped for fire fighting, rescue operations and oil recovery also.
AHTS vessels range from small and compact vessels to large and powerful ships. ( 30mts to 100mts ) They can be fitted with the world’s largest advanced winches, providing tremendous pulling power for working at the deepest depths

4. Towage Services
Anchor handling tug supply (AHTS) vessels tow oil drilling rigs or jacket platforms to their location and back, behaving like an ordinary tug.
For towing Anchor handling tug supply (AHTS) vessels have very high power engines (~12000bhp) for an enhanced towing and anchor handling capacity. They have more power to increase the bollard pull.
–*Sea Eagle 1*
Modern vessels are capable of positioning and mooring drilling rigs in any location, at virtually any depth and under any conditions – *TIDEWATER*

5. Anchor Handling
Machinery is specifically designed for anchor handling operations.
They have an open stern to allow the decking of anchors.
They have arrangements for quick anchor release.
Fitted with powerful winches for quick and effective anchor handling.

7. Other Secondary Uses
Fire Fighting: Modern vessels are fitted with pumps that can spray water.
Rescue Operations: They have a large deck area and exhibit good stability suitable for rescue operations. Sea Eagle 1 can carry a maximum weight of 2,300t without submerging.
Oil Recovery: Modern vessels are fitted with suction pumps that can be used to clean in case of oil spills.

9. Machinery on board a typical AHTS
DECK MACHINERY
Anchor Windlass
Deck Crane ( Telescopic type) 2 - 3
Tugger Winches
Towing and Anchor handling
winch
Towing pin and shark jaw
(hydraulic)
Mooring winches
Mooring Anchors

10. A Towing Pin and Shark Jaw

12. Main Machinery Main Engine Steerable thruster Tunnel thruster
Generator
Harbor generator
Emergency generator
Air compressor
Air receivers
Bilge/ballast pump
Fire pump
Fuel oil Cargo/ transfer pump
Drill water pump

13. 80 TON BOLLARD PULL AHTS L AHTS HALUL OFFSHORE SERVICES Co. W.L.L
Owner : Halul Offshore Services Company W.L.L
Builder : TBA
Classification: LR / IAACS Member

14. Halul Offshore Services Financial Status

15. GENERAL SPECIFICATIONS
OUTLINE
Twin screw Anchor Handling,
Towing, Supply and fire fighting Vessel completely outfitted and equipped for rescue, offshore supply and other related duties.
Operational on a twenty-four (24) hour per day basis.
Vessel shall be capable of operating in all seas and weather conditions, which may occur.

16. Operational Requirements
Transport fresh water, diesel oil, deck cargoes, bulk cargoes (cement/Barites/Bentonite) liquid mud, stores, materials & equipment.
Tow / move Rigs
Anchor handling
External fire fighting
Transportation of passengers to and from Oil field, located offshore in the State of Qatar

17. Operational Requirements
To berth and/or hold station near offshore platforms to safely transfer passengers, liquids, deck and bulk cargoes.
Rescue personnel fallen overboard and pollution control
Helicopter hoisting facilities
24-hours/day continuous operations, capable of remaining on station for a minimum of 15 days.

18. Operational requirements
Good maneuverability and station keeping
Twin controllable pitch propellers
Twin rudders / Azimuth Thrusters
Bow and stern thrusters
Wheelhouse is designed to ensure excellent all-round view.
full-length windows and deck head windows
Additional CCTV monitoring with 3 cameras (zoom and wide angle)

19. Endurance Requirement
Provide a stable platform/deck even in rough weather conditions.
To minimize pounding and rolling, the main weight should be concentrated mid-ship and aft and the hull form should feature a fine bow with flared section above waterline.

20. Principal Particulars
Dimensions (approximate):
Length overall m
Breadth moulded m
Depth moulded m
Draft Scantling m
Draft loaded (Maximum) m
Performance:
Dead Weight T
Bollard Pull T
Trial Speed at100% MCR & 4.5m draft Kts
Service Speed at 85% MCR & 4.5m draft Kts
Endurance days at service speed

21. Machinery Main Engine 2 x ~2750 KW
Propulsion System conventional or Azimuth
Generating Set x ~400 Kw (diesel driven)
Shaft Alternator x ~1200 KW (each)
Emergency Generator x 120Kw (diesel driven)
Main Engine driven Fi-Fi pump x1650 cu. m
Bow Thrusters x~500 KW
Stern Thrusters x~500 KW
Fuel Oil Cargo Pump x~100 cu.m/hr @75m head
Fresh Water x~100 cu.m/hr
Drill Water Pump x~100 cu.m/hr
Mud Pump x~100 cu.m/hr

22. Complement Crew 18 men Hospital 0 men Special personnel 20 men
Total men
Clear ceiling is not to be less than 2150 mm (average) generally in accommodation spaces
The accommodation is well appointed and centrally air-conditioned.

23. Classification Registry
The vessel including its Hull, Machinery and outfitting equipment shall be constructed in accordance with the latest Rules for Building & Classing of Steel Vessel to Lloyd Register of Shipping.
Rules which may come into force prior delivery of the vessel shall be treated as modification.
Registry
The vessel will be registered at Doha, under the flag of Qatar.

24. Rules & Regulations SOLAS International load line convention
International convention for prevention of pollution by ships
Radio communications regulations
Regulation for Prevention of collisions at sea
IMO, ISO and many others

25. Certificates Builder’s certificate Classification certificate
safety equipment, construction, radio certificate
Load line certificate
Tonnage certificate
IOPP certificate
and many others

26. Materials & Workmanship
good shipbuilding quality
test certificates
good welding quality
Blasted and primed before using.
Only mild steel to be used for hull structure
All visible plates are to be smooth and straight
Makers List
All timber to be impregnated against rot, infestation and free from odour.

27. Welding Contract plans, specification & classification requirement.
High standards of up-to-date welding practice
Alignment, fairness, edge preparation and gap widths.
Continuous welding is to be used for all the structure up to uppermost continuous deck and weather exposed area.
Intermittent welding to be used only inside the superstructure.

28. Inspection/Supervision
surveyors, owner’s representative and consultants are to be given free access to the builder’s yard.
Qualified personnel shall be in attendance during installation, commissioning , testing , dock trials and sea trials as necessary at builder’s expense.
QAP Plan showing inspections and control points by class and owners representatives, within 2 months of contract signing.

29. Tests Shop Trials Onboard Trials Alternator set load trials
Hydrostatic pressure tests
Sea trial
Speed trial
Endurance trial
Steering and turning circle trial
Stopping and astern trial
Inclining test
Environmental conditions
Trim and stability

30. Dock trails
Dock trails are carried out in accordance with a programme agreed between builder and the owner
Trim and stability

31. Drawings General arrangement Hydrostatic curves Stability booklet
Dimensional profile
Docking plan
Anodes plan
Structural profile and deck
Midship section

32. Drawings Engine seating detail Forward sections Aft sections
All transverse and longitudinal bulkheads
Superstructure detail
`A’ bracket details
Shafting arrangement
Rudder arrangement

33. Drawings Rudder stock and rudder drawing
Anchoring and mooring arrangement
Deck outfit plan
Ship’s fuel oil and Lube oil system
Engine room layout
Thruster tunnel details
Refrigeration system
Schematic wiring and reference to fittings

34. Drawings Shaft generator arrangement Ventilation arrangement
Cargo securing manual
Fire safety operation booklet
Training manual for fire fighting
Well killing liquid system
External FI-FI system
Layout of manholes and hatches

35. Drawings Mast drawing Bulk cargo system Purification system
Painting scheme
Fendering plan
Towing and anchor handling arrangemet and details including all the equipments onboard like stern roller, tow pins, shark jaw, towing bollard, AHT winch etc.

36. Environmental conditions
The vessel, plant, machinery and equipment, their components and related systems shall be entirely suitable for service under following conditions

37. Sea water temperature 36C
Ambient air temperature C
Relative air humidity %
Wind velocity m/sec
Significant wave height m
Current velocity m/sec
Wave period sec

38. Framed Plans
Vessel Operating Manuals
Manuals of Machinery and Equipment
Spare Gear and Tools
Practice
Modification
Ship’s Model
A scale of 1:100 shall be supplied
Model test
Delivery

39. THANK YOU