OKYALOS High Speed Interceptor Boat

© ONEX SA 2017 Naval Systems

okyalos: 1.(an. Greek: ὠκύαλος ) the one

who can travel at high speed on the water

2. (Homer): the ship of Odysseus

(“Odyssey”)

OKYALOS is a high-speed multi-

purpose vessel capable of operating in

closed and open sea, under harsh

environmental conditions, at day and

night. Its advanced characteristics and

customization capabilities enable it to

adjust easily, cost-effectively and with

great flexibility and agility to a vast

variety of operational cases and

applications. The first Okyalos Vessel

was launched, successfully tested and

delivered to the Hellenic Navy in June of

2015.

Editions

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CLOSED 10

OPEN 14

General Description

© ONEX SA 2017

High Speed Vessel

Evolution of Okyalos Prototype

Design Data:

High Speed Craft

Monohull Design

Category B

Restricted open-sea: 2,5 m ≤ Wave Height< 4,0 m

Non Cargo Ships less than 90 m

Mission: Multipurpose, Personnel fast evacuation and transport.

Advantage: High adaptability to the client’s needs even during construction

process (customized design).

General Description

© ONEX SA 2017

General Features

Overall Length: 13.60m

Ship Length (LOA): 12.60m

Breadth b: 3.15m

Draught (DWL): 0.70m

Maximum Fuel Capacity: 1,100It

Crew Members: 4

Maximum Speed: 45 knots.

Maximum Range (at 40knots): 300nm.

CLOSED 10 Edition

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CLOSED 10 Edition

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OPEN 14 Edition

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© ONEX SA 2017

OPEN 14 Edition

Performance

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General Characteristics

Overall Length: 15m

Ship Length (LOA): 13.295m

Overall width: 3.966m

Breadth B: 3.156m

Draught (BWL): 0.683m (Model Open 14) -

0.710m (Model Closed 10)

Maximum Fuel Capacity: 2,000It

Crew Members: 14 (Model Open 14) - 10

(Model Closed 10)

Performance (Estimated)

Maximum Speed: 50 - 55kts

Operational Speed (90%) : 45 – 49.5kts.

Range at Operational Speed: 300nm (Closed

10) - 500nm (Open 14).

Structure

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Hull Type: Monohull (Hard Chine Hull)

Hull Shape: Deep V, 25deg

Two Pairs of Water Resistant Keels (Spray Rails, Strakes).

Construction Materials: AL. Alloys 5083 & 6082

Structural Configuration: Combination of Frames and Longerons

Number of Bulkheads: Five (5)

Structure

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Compartments:

Engine Room

Fuel Tank

Passenger Cabin (Closed 10)

Cockpit

Cargo Hold – Store Area

Bow Water-Tight

Structure: Tubes

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Tubes: Five chambers (each side)

Diameter (Average): 60cm.

Construction Material: ORCA 866 Nepture 1670 dtex Grey Cloth

Breakwaters: Two Sets (Dimensions: 90x24mm)

Antislip Clothing: All over the upper part of the tube.

Cruising capability even without the use of tubes.

Structure

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Painting: Preparation with sandblasting (or other mechanical method) &

use of epoxy corrosion resistant – pollution preventing paintings

applicable to aluminum vessels (copper free)

Safety Rails

Antenna Installation Infrastructure

Structure: Why Aluminum?

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Life Limit

Corrosion Resistant

Low Maintenance Cost. Checking the condition and changing sacrificial

anodes (zinc or magnesium) regularly, the structure can be prevented from

the corrosive environment.

The naval alloys 5000 and 6000 series are known for their high strength,

corrosion resistance, and good elasticity.

An aluminum boat is estimated to have a life span of more than 30 years.

Weight – Fuel – Speed

The low density of aluminum, combined with high strength, toughness, and

corrosion resistance, allow vessel designers to achieve weight savings of

20-30% over GRP designs.

Weight savings equate to higher speed and less fuel consumption.

Structure: Why Aluminum?

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Impacts

GRP material is extremely brittle while aluminum has considerable

ductility.

In case of strong impacts, the GRP may faces cracking and fracture

while aluminum can support impact loads without detrimental

permanent deformation.

Sun Exposure

Aluminum is not affected by Ultraviolet (UV) radiation while GRP ages

over the time increasing the point of brittleness. The higher the

brittleness, the higher the possibility of cracking in case of impacts.

Recyclability

Over two-thirds of all the aluminum ever produced is still in use today.

GRP can not be recycled at all.

Structure: Why Aluminum?

© ONEX SA 2017

Maintenance

Aluminum boats are preferred in “hard jobs” because the repair

procedure is easy and quick.

Widespread use (Military, Landing crafts, Lifeguards and many

Fishing boats are made from aluminum) because a small scratch or

hitting can be fixed in a few minutes.

Raw Material Origin

Aluminum produced in Greece.

Structure: Why Aluminum?

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Welding Supervised by a Welding Engineer.

Manufacturing according to Worldwide (International)

Specifications concerning Assembly, Welding, Quality

Control, Safety Precautions, Repair Processes etc.

Basic Specifications:

ISO 15614-2: Specification and qualification of welding

procedures for metallic materials - Welding procedure

test - Part 2: Arc welding of aluminum and its

alloys.

ISO 9606-2: Qualification test of welders - Fusion

welding - Part 2: Aluminum and aluminum

alloys.

ISO 10042: Welding -- Arc-welded joints in aluminum

and its alloys - Quality levels for imperfections

Thrust

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Surface Drives - Arneson Drives

Advantages:

Higher Efficiency (15-30%)

Higher Speed (15-30%)

Maneuverability

Propeller Shaft Trimming

Thrust

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Volvo Penta

D11-670

ASD 11S

ROLLA

MGX-5065A

ΕC 300

CARDAN

Electricals

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Batteries: 12VDC, deep cycle,

proper for naval and dual use

(engine start & electrical power

supply).

Electric Board: 12VDC, installed in a

closed & protected area

Diesel Generator (Available only for

Closed 10): 230V / 50Hz,

continuous function capability,

battery charging through a

transformer / rectifier

Alternator/Rectifier: Battery

Charging.

Auxiliary Systems

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Exhausting System

A exhaust VETUS system will be used according to the crafts needs.

Ventilation System

Passenger cabin: Two doors.

Engine room: Air intakes & 2 ventilators (750 m3/h minimum air supply

each).

• Pumping System

Hull pumps & water level indicators.

Hull pumps controlled from the cockpit (automatic function capability

integrated).

Auxiliary Systems

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Firefighting System

Two (2) automatic firefighting systems

ΒΟΝΡΕΤ in the engine room.

Two (2) fire extinguishers (CO2 , 5Kg each).

Fuel System

Tank Characteristics:

Capacity: 2000 lt

Fuel level indicator.

Fuel supply valve (emergency stop

capability) remotely controlled (mounted

outside of engine room area).

Separately installed, easily removable, made

of aluminum.

Direct engine and electric generator fuel

supply.

Auxiliary Systems

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Trim Adjustment System

Two (2) hydraulic blades ΒΕΝΕΤΤ on the transom

Remote control: Cockpit

Anchoring and Mooring System

Consists of:

One (1) Anchor Wind Lass.

One (1) Anchor (Minimum weight: 16Kg).

Chain (8mm thick, 60m long).

Six (6) cleats.

Auxiliary Systems

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Seats

“ERMIONI vs MIL”

High manufacturing quality

Shock absorbing properties

Adjustable hardness & distance from the

floor

Made by EMAL - N. BOULELAKIS SA

Naval Equipment

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RADAR SIMRAD

SCANNER 4G

VHF SIMRAD RS12

GPS SIMRAD GS25 GPS SIMRAD GS25

SIMRAD NSS

SIMRAD FC40 AIRMAR P319

FLIR M-618CS (CLOSED 10)

or M-324XP (OPEN 14)

Armament Systems

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Bow & astern deck structural

reinforcement for mounting the gun

(the type & configuration of

reinforcement depends on the type of

gun selected)

Technical Drawings/Manuals

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The following drawings (soft copy and two [2] sets of hard copy) will be available

with the boat:

Ship General Assembly.

Midship-Section

Profile and Deck

Shell Expansion

Electrical Harness Diagram

Electrical Wiring Diagram

Fire Control and Safety Plan

Additionally:

Stability & Trim Adjustment Manual (including boat hydrostatic characteristics

information tables)

All Individual Manufacturer's available data sheets & brochures (drawings,

manuals, list of materials)

Operational Tests

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Full functional test of the ship and all its

subsystems (both in product area and sea).

Full operational test of the ship at sea

especially focused on the following

aspects:

Stability

Turning circle attitude

Maximum cruising speed

Fuel consumption

Certifications

© ONEX SA 2017

The design of the craft will meet the rules and regulations of

the French Shipping Register Bureau Veritas. The basic

regulations which will be accompliced are:

NR 396_2002-02-Rules for the Classification of High

Speed Craft

NR 467_2014-07-Rules for the Classification of Steel

Ships

NR 561_2012-03-Hull in Aluminum Alloys

NR 600_2014-07-Hull Structure and Arrangement for the

Classification of Cargo Ships less than 65 m and Non Cargo

Ships less than 90 m.

Certifications

© ONEX SA 2017

OKYALOS High Speed Interceptor Boat

For more information on OKYALOS and technical datasheet visit www.onexcompany.com

Naval Systems