1, GENERAL

1.1 General Description

This specification describes the design and construction of the proven reliable, rough sea-going 16M GRP vessel which will be arranged as a Patrol and SAR Craft (hereafter referred to as “vessel”) to use in coastal and offshore waters, with equipment capacities to focus on below missions:

 

a. Terrorist activities interdiction;

b. Coastal defense against illegal activities and smuggling;

c. Interception of hostile vessels;

d. Fishery control;

e. Protecting natural resources against unauthorized exploitation;

f.  Offshore facilities protection;

g. SAR and ambulance operations;

h. Detecting and fighting sea pollution;

i. Oil field security and protection;

j. Mid-range combat operation;

k. Boarding mission.

 

The vessel will be constructed to a high commercial standard with particular attention to minimising noise transference and vibration while enhancing structural rigidity and offering best crew comfort.

 

Principal particulars:

• LOA: 16.35 m

• Hull Length: 15.9 m

• Beam Overall: 4.95 m

• Hull Beam: 4.2 m

• Depth: 2.7 m

• Displacement (lightship load): Approx. 16 tonnes

• Displacement (half load): Approx. 18 tonnes

• Displacement (full load): Approx. 20 tonnes

• Draft: 0.9 m

• Bow entry deadrise: 51 deg.

• Midship deadrise: 25 deg.

• Stern transom deadrise: 18 deg.

• Engines: 2 x SCANIA DI13 077M 551KW 750HP @ 2600RPM, 1500 operating hr/year

• Gearbox: 2 x ZF 286Agearbox or similar MGX gearbox, subject to user preference

• Propulsion: 2 x MJP Hybrid 300 Waterjet

• Max. speed: 40 knots at half load/100% MCR/Beaufort Scale sea state two/clear hull

• Cruising speed: 34 knots

• Fuel capacity: 2 x 1750L

• Freshwater capacity: 1 x 500L

• Holding tank capacity: 1 x 200L

• Generator: 1 x KOHLER 11KW single phase generator, subject to final load calculation

• Range: No less than 250 NM at 40 knots max. speed with 10% fuel reserved

• Compliment:  six crew persons with bunks available for four person, when for transport of survivors, it can carry around 20 persons in total

• Seakeeping ability: Sea state five according to Douglas Scale

• Construction: Sandwich composite to be fully infused throughout

 

1.2 Design and Attributes

i. Vessel Layout:

The vessel is laid out to include a fore peak anchor tank, one sleeping cabin with two bunks, one toilet room, one shower space, one medical equipment storage room, one small galley space, one temporary medical treatment bed room, one mess room and one machinery room in the hull while the deckhouse is laid out to accommodate the ergonomically designed console station, six crew seating and spacious crew maneuvering space as per stated in the GA drawings.

 

ii. Hull Form:

The hull form is well proven and will be double-chined, deep-keeled, variable deadrise deep V planing form incorporating with a fine forward entry, flared bow, wide and slightly down-angle chine flats, lifting strakes/spray rails, planing flats and low L/B ratio on the main chines. The bottom lines are semi-planing in form and will slightly rise up from the forward towards the stern.

 

iii. Strong Bow Protection:

The bow will be structurally reinforced to enhance abrasion resistance and then to be outer-fixed with heavy-duty rubber fendering in order to ensure that the bow structure can absorb all loads/impacts transmitted and to give good seagoing abilities, ensuring extremely strong protection.

 

iv. Attributes:

The vessel will be designed to provide the following attributes:

1) Shall be sea going and capable of undertaking sea voyages under its own power at

any design loaded condition and draught.

2) Shall be capable of working in juridical waters, regardless of sheltered, unsheltered or open seas with waves upto Douglas state five.

3) Shall offer stable platform with all-around manuevering quality on the whole deck.

4) Shall be applicable for good day helm visibility.

5) Shall have good manoeuvrability in all defined conditions and low noise at all speeds.

6)  Shall offer a structural life span of 15 years under normal operations and reasonable

maintenance, allowing for 1200 running hours of average annual usage with

unlimited operating hours/ day. 

 

v. Operation Conditions:

The vessel and equipment package will be suitable for operation in tropical weather conditions in the western African sea, detailed as below:

Ambient Air Temp.: Max 52 deg. C

Salinity: Max 42 ppt

Seawater Temp.: Max 35 deg. C

Relative Humidity: Max 90%

Simultaneous extreme conditions: 42 deg. C & 85%RH

As special note, max. speed at open throttle may be slightly reduced due to impact to performance in max. power output of the two main engines when at extreme weather with sea water temperature higher than 35 deg. C.

 

1.3 Compliance and Survey

The vessel is to be surveyed to latest Rules and Regulations for the Classification of Lloyd’s Register, notated as Special Service Craft, Patrol, G3 Service Group.

As such, the vessel will be designed and built for patrol mission in restricted service area of waters with reasonable weather as defined by Lloyd’s Register, and generally the range to refuge is no more than 150 nautical miles in winter. 

 

Furthermore, the vessel shall comply with the requirements of main class for stability purposes of the Lloyd’s Register “Rules for the Classification of Special Service Craft” applicable to G3 navigation zone.

 

For purposes of structural design the worst intended conditions will be defined as 1 m significant wave height at 34 knots cruising speed, or maximum lightweight speed in 0.4 m significant wave height, whichever is the more onerous condition.

 

As preliminary only and subject to final approval by purchaser, the statutory rule is designed to follow MCA MGN280 for Small Vessels in Commercial Use, Operation Category Area A1 which covers same navigation zone as defined by G3 Service Group of Lloyd’s Register, also equal to navigation zone covered by GMDSS Area A2.

 

The Builder will appoint an approved Surveyor to carry out survey inspections during construction and testing as per Survey requirements.

 

1.4 Quality and Control

The shipyard is accredited to ISO 9001:2008 which is certified by RINA and CCS, both are  members of International Association of Classification Societies (IACS).

 

1.5 Documents

The following documents will be used for the construction of the vessel:

• Design Document Package

• Vessel Specification Document

• Survey regulations as determined.

• Components suppliers documentation.

In the event the drawings differ from this specification, the specification will take precedence.

 

As Built Drawings:

One set of drawings as per normal boat building practises will be supplied in English language upon the vessel completion corrected to ‘As Built’ as follows:

• General Arrangement,

• Hull Construction,

• Superstructure Construction,

• Rudder Construction,

• Arrangement of Machinery Spaces,

• Deck Plan, Structural Installations & Arrangement of Doors & Windows,

• Construction Plan of Main Engines & Gear Box Seating,

• Shafting Arrangement & Propeller Plan,

• Cathodic Protection,

• Steering System,

• Exhaust System Arrangement,

• Fuel System Schematic,

• Bilge & Fire Schematic,

• Firefighting & Life Saving Equipment Plan,

• Equipment Number Calculation,

• AC System,

• AC Distribution Engine Room,

• AC Distribution Accommodation,

• AC Distribution Wheel House,

• DC Supplies,

• DC Distribution Engine Room,

• DC Distribution Wheel House,

• DC Distribution Accommodation,

• Navigational Equipment,

• Radio Equipment,

• Internal Communication Systems,

• Air Horn system

• Any other relevant system/circuit diagrams of the boat

• Deck Equipment arrangement

• Safety Plan

 

Reports:

One set of the following reports will be provided in English language upon the vessel completion:

• Vessel stability

• Sea trials

 

Manuals:

One set of the following manuals shall be provided in English language upon the vessel completion:

• Main Engines

• Generator

• Waterjet

• Navigation Equipment

• Builder generated component list detailing suppliers contact details

• Owner’s Manual

 

Certificates:

The following certificates shall be provided in English language upon the vessel completion:

• Builder’s certificate.

• Class certificate.

• Speed trial certificate.

• Compass adjustment certificate.

• Firefighting equipment.

• Navigation lights.

• Lifesaving appliances.

• Manufactures statement of origin.

 

Others:

Paint list documentation

Inventory list

Engine room log-book

 

1.6 Material and Workmanship

The Builder shall construct the vessel in a thorough and workmanlike manner.

The Builder shall construct the vessel in a manner consistent with best trade practices and in accordance with good commercial quality finishing.

All materials used and equipment fitted shall be of good marine quality and suitable for its intended application.

 

1.7 Alternatives

The Builder may wish to propose alternative materials, equipment or methods which would be more economical and/or practical for the Builder to supply and fit than those stated in this specification. In such cases the Builder will discuss the proposal with the Purchaser, and obtain the Purchaser’s approval prior to proceeding with the alternative.

 

Equipment marked “or equal” may be substituted for equivalent quality items, subject to approval by the Designer and the Purchaser.

 

1.8 Weight Control

The builder is to be responsible for maintaining strict weight control throughout the project,with constant reference to the designer-supplied weight study. The builder is to advise the designer any items of equipment or fit out which are significantly different from the allowance made for in the weight estimate.

 

The builder will also weigh the following components/stages when completed and provide

the results of LCG/mass to the designer:

1. Completed Hull shell.

2. Completed Deck.

3. Completed internal structure.

4. Completed Boat.

Depending on build process, these weight measurements may take the form of

additions/deductions from previous weights.

 

Weighings are to be completed on scales with a calibration certificate.