Internally, the advanced machinery systems and arrangement result in a vessel with greatly enhanced operability, maintainability and accommodation standards.

PRIMARY ROLES
ONUK MRTP21/U "Coast Guard boat & Fast Rescue Craft” has been designed to carry out a wide range of littoral and coastal water law enforcement-naval duties and open sea rescue, including:

Search and rescue
Sea ambulance
Pilot boat
Police boat
Pollution control
Surveillance

BACKGROUND:
ONUK MRTP21/U “Coast Guard boat & Fast Rescue Craft” is scaled down version of the 90 tonne ONUK MRTP29 ("KAAN 29" Class) of the Turkish Coast Guard..

PERFORMANCE:
Speed and seakeeping:
Depending on engine/configuration selection, the proven ONUK OE-01 deep V hull will enable the boat to reach speeds up to 50 knots in calm waters and above 45 knots in Sea State 3, allowing rapid reaction comparable to a helicopter, and can be used in confined spots or heavy weathers not suitable for helicopter operations. ONUK MRTP21/U will be able to operate in heavy sea's performing Search and Rescue duties up to Sea State 7.

The seakeeping capabilities of the ONUK MRTP21/U “Coast Guard boat & Fast Rescue Craft” derive from the ONUK MRTP29 of the Turkish Coast Guard: The boat is designed for a tough professional use with emphasis on seakeeping. ONUK MRTP21/U has a soft and dry ride in adverse conditions. The MJP 550DD water jet drive system provides extreme maneuverability with high precision control and a very shallow draught, enhancing the operation in confined waters or boarding a larger ship in rough seas.

Stability: Intact-Damaged:
Commercial and Turkish / NATO naval standards have been applied to the ONUK MRTP21/U for the intact and damaged stability. ONUK MRTP21/U meets the DNV standards as well as Turkish Navy and NATO criteria for damaged stability and will remain afloat and upright with flooding in any single main compartment.

CONSTRUCTION AND COMPONENTS:
ONUK MRTP21/U is built in advanced composites to satisfy the very tough requirements of an intensive professional use together with a long service life. The benefits of the advanced composite structure are:

WEIGHT REDUCTION
* Improved Performance
* Increased Payload
* Fuel Savings

CORROSION RESISTANCE
*Longer service life
* Maintenance savings

IMPROVED
* Threat avoidance/detection
* Ballistic protection

REDUCED SIGNATURES
* Machinery vibration/acoustic
* Magnetic signature
* Heat signature

The hull and superstructure are constructed to Det Norske Veritas (DNV) HSLC Patrol R2 classification. All boats of the series are delivered with the relevant DNV Certificates.
A large shock resistant fender system will enable the ONUK MRTP21/U to board safely larger vessels in rough waters.

The helm station and the interiors have been designed in line with the SAE recommendations for ergonomics to provide the crew with maximum comfort and minimum fatigue in prolonged use in heavy seas.

Machinery and propulsion
The mechanical components are selected with the intensive professional use in mind. They offer a high level of reliability, despite the extreme performance requirements.

The propulsion is by twin MTU 12V183TE92 diesels and MJP 550DD water jets. Depending on the speed requirements, the ONUK MRTP21/U can be equipped with different components for optimum operational efficiency / price ratio.

MISSION MODULES
ONUK MRTP21/U can be equipped with various mission modules depending on the customer requirements. Despite the size of the platform, these modules have been integrated with the modularity and reconfigurability in objectives in mind. Thus, the platform can be reconfigured with different mission modules, increasing dramatically the operational flexibility and reducing the costs. The mission modules would be:
Search and rescue equipment
Sea ambulance equipment with full coroner suite
Multi sensor surveillance suite
Pollution control laborator

DIMENSIONS
Length, deck:	21.0m
LOA (Inc platform):	22.75m
Beam, max:	5.02m
Draught:	1.20m
OPERATIONAL CHARACTERISTICS
Maximum speed, at full load:	34 knots (Up to 40 knots available depending on engine and configuration selection)
Propulsion:	Diesels, 2 x 735 kW MTU 12V183 TE92 (Other engines available)
Drive system	Water jets, MJP 550DD
Range:	350+ nautical miles
Dead weight:	6.0 tonne (metric)
CAPACITIES
Fuel capacity:	4.00 m3
Fresh water:	0.50 m3
Endurance:	2 days
Crew	5
Transportation	10 rescued + stretchersor 8 pilots in Pullman seats

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