skif incomingOver-Watch Maritime Patrol Aircraft.

Over-Watch can supply a Maritime Patrol Aircraft with our partners in the UK.

The Design, Modification, Certification and Engineering Team, based in Chester, UK, can transform most new and used type of aircraft, into fully integrated ISR and Special Missions capability platforms.


General information:

Crew: Two pilots and a mission crew of two operators and two observers (optional).

A proven civilian, Military and Coast Guard service. 

Max t/o weight: 18.734 kg (41.300 lbs.).

Range: 2.200 Nm (4.100 km).

Endurance: 10 hours.

Cruising speed: Normal cruising speed 180 – 240 KN, max. 258 KN, min. 95 KN.

Optimal surveillance speed in 500 ft. is 185 KN.

Comm. system: HF, VHF, UHF, Cellular, Tetra and Satellite Communication.


Norwegian Coastguard DASH-8

Surveillance Sensors and SAR equipment:

Maritime Search Radar under the fuselage giving 360° view specially designed for detecting small targets in rough seas as well as larger targets when the aircraft is operating at an altitude of 25.000 ft.

Side Looking Airborne Radar (SLAR) with antennas on both sides of the fuselage to detect pollution and ice.

Stabilized IR and TV cameras made for day and night operation enabling the crew to identify vessels in low light conditions as well as from a distance.

Handheld still and video cameras are connected with the Mission Management System.

Display and Management System:

Two operators stations with Mission Management System (MMS) giving each operator total mission view including MSA situational awareness and provides task orders, coordination, evidence gathering and reporting.

Cabin configuration

Two face forward operators work stations and two observer seat close to observer’s window. There are seats for twelve passengers in four club seat and eight normal seats. Two certificated stretcher for ambulance flight and possible to add third stretchers on board.

The aircraft is equipped with Air Operable door and launch tube for air-dropping of search and rescue equipment, markers, oil sample buoy and life rafts.

There is a galley with a warming oven, hot jugs, coffee maker, refrigerator and microwave.

Detailed information:

Surveillance Radar

Elta EL/M – 2022 (V) 3 maritime search radar is a multi-mode, X-Band, pulse Doppler radar operating with low and medium PRF waveforms (mode and range scale dependent). The surveillance radar has a belly-mounted dual planar array antenna that provides full 360° of azimuth coverage, and is attached to a horizon-stabilized pedestal that offers two degrees of freedom. The radar has several different modes:

o Detection Modes

Beacon Mode for detection of surface SART beacon transponder in range of 30 nm.

Sea search Mode for high detection out to the radar horizon (200 nm)

 High resolution surveillance / Anti-Submarine Warfare out to 40 nm in low altitudes.

 Long range surface surveillance mode for medium to long range detection (80-200 nm).

Scan Moving Target Indicator for automatic extraction of moving targets.

Sea strip that does provide “rolling” SAR image of ground/sea strip with sea targets detection.

o Image modes

Navigation and weather mode.

Scan SAR mode for mapping resolution for ground or coastal operation.

Strip SAR mode for mapping resolution for ground or coastal operation and target discrimination such as vehicles, structures and topographical features.

o Classification modes

Inverse Synthetic Aperture Radar mode that provides a two image dimensional image of targets. Classification of maritime targets possible at any range from 6 nm up to 150 nm.

Classification Synthetic Aperture Radar mode for classification of maritime targets up to 80 nm.

Range signature mode for classification while scanning.

Side Looking Airborne Radar (SLAR)

Swedish Space Corporation MMS 6000 SLAR for detection of oil spills at sea. The SLAR is equally effective for the detection of small point targets, e.g., small vessels and life rafts. The SLAR transmits radar pulses at oblique angles to both sides of the aircraft. The radar echoes from the sea surface below are then received by the SLAR. The received signal is processed to form one line in the SLAR image. As the aircraft travels forward new lines of the SLAR image are formed. The SLAR image covers up to 40 nm of sea surface to each side of the aircraft’s flight path. This radar is mainly for pollution detection and ice surveillance.

EO/IR camera

The aircraft includes a Wescam MX-15 Electro-Optical/Infrared (EO/IR) Surveillance System. The EO/IR surveillance system provides electro optical sensing functions for long-range nighttime identification of ships and vessels, day/night surface and littoral surveillance for search and rescue, oil spill detection, and treaty enforcement support. The EO/IR has several different functions like “Auto Video Track”, Auto Scanning and Laser pointer for night identification.

o Range.

Classification at day and night: 25-30 nm.

Identification at day (25 cm high letters): 2,5-3 nm.

Identification an night: 1 nm.


The aircraft is equipped with SAAB Transponder tech Airborne Transponder R4SA with secure firmware for the AIS. The AIS provides identification and tracking of all vessels equipped with AIS transponders. The AIS Interface to the mission management system allows the operator to visually display and extract amplifying information of any ship being reported by the on-board AIS system. Surveillance Radar target information is available for display correlation. Operator can select between “Silent” and “Normal” mode.

o Range:

5.000 ft = 100-110 nm.

20.000 ft = 200 nm +

Hand held Cameras

The aircraft is equipped with a handheld Canon EOS-1D Mark II still frame camera and Canon XL2PAL digital video camera. These cameras will be used to gather video and still frame images from the observation windows or the cockpit of the ICG aircraft. Both handheld cameras can be connected to the MMS for storage and real time analyzing.


o VHF aero.

Three dual Rockwell-Collins VHF-22C (8.33 KHz and 25 KHZ frequency spacing) for communication with Air Traffic Control.


Rockwell-Collins TALON RT-8202 (30 – 400 MHz).

o HF

Dual Rockwell-Collins HF-9000 that covers the 2.0 to 29.9999 MHz frequency range In 100 Hz steps. Communication is possible in both simplex and half-duplex.

o VHF marine

Dual Raymarine RAY240E Maritime VHF radios that have the capability to transmit and receive on all available international Marine VHF radiotelephone channels.

o Tetra

Sepura SRG2000 TETRA Mobile Radio with dual controls with the addition of a Gateway.

o Satcom

One (1) Rockwell-Collins SAT-6100 SATCOM system to provide mission crew the ability to access PC data, voice and facsimile services virtually anywhere in the world through three traditional Aero-H/H+ channels, and also hosts two Swift64 channels. The SRT-2120 operates one packet data channel for station keeping and flight deck data link services, and two circuit mode channels for voice, fax and PC data, for a total of three Aero service channels. Additionally, two channels of Swift 64 service are hosted by the SRT-2120, providing the path to 128 kbps high-speed data, and eventually Swift Broadband services once made available by INMARSAT.


Nokia 810 GSM-type multiband cellular phone.

Integrated mission management system.

All sensors are integrated to a Mission Management System (MMS). The MMS provides the controls required to operate each of the mission sensors. Sensor controls are accessible at each operator workstation through the touch panel displays, trackballs, and tear-off menus. Imagery available from each mission sensor is available for display in multiple windows at each of the operator’s workstation. The aircraft flight deck is fitted with two MMS display and keyboard with MMS interfaces dedicated to the presentation of search radar video, digitized maps or MMS situation.

The MMS generates a tactical picture using surveillance data and video obtained from the radar, EO/IR, SLAR, hand-held video and still cameras, AIS data, and navigation equipment installed on the aircraft. The MMS integrates mission systems and cockpit operations to ensure that mission control and display functions provide awareness to the cockpit and mission crew. All sensors and the tactical plot are recorded and can be re-played during the mission or after the mission.

The MMS includes photo database for the storage of still images or short video clips and software for images analyzing.

Maritime Surveillance Capacity

o Surveillance altitudes and detection range.

Suitable surveillance altitude is 5000 feet. That altitude gives radar range of 80-90 nm for detection of medium size vessels and AIS range of 100-110 nm.

From 5000 feet it is easy to identify vessel by EO/IR and it only takes few minutes to decent to lower altitudes if needed because of cloud cover or poor visibility.

From an altitude of 20.000 ft. the radar horizon go´s up to 200 nm and the AIS range is above 200 nm.

o Correlation between radar targets, AIS and VMS information and remote identification supported by TV/IR as relevant.

Part of preparation before flight is collection of maritime information for the surveillance area like VMS, AIS, Satellite pictures and reports from other maritime organization. By using that information the crew can concentrate on unknown traffic and vessels that need further attention like oil tankers and fishing vessel in restricted areas. During the flight these information are correlated to the surface picture from radar and AIS. It´s also possible to send updated VMS information on board via Satcom during flight.

o Use of photographs from systems and drawings to illustrate

With image analysing software it´s possible re-recognise vessels on ISAR, EO/IR and

still image´s. The MMS also includes ENVI software for analysing of a pollution picture.




Special Mission Modified King Air 350ER

Max Range Cruise @ 35,000 ft – 2,395 nm

Max Endurance – 10 + hours with

45-min IFR reserve

Proven Systems and Capabilities for Military and Civil Agencies

Multi-Role – CommandKing Air, Control,

Communications, Intelligence, Surveillance, Reconnaissance (C-3 ISR)

Maritime Patrol • Anti-Submarine Warfare • Coast Guard • Customs • Police • Serious Organised Crime • Counter Terrorism

Border Security • Human Trafficking • Counter Narcotics • Arms Trafficking • Irregular Migration • Smuggling • Search & Rescue

Fisheries Protection • Pollution Control, Detection & Clean-Up • Fire & Emergency • Disaster Management • Special Events • Port Authorities

Environmental Monitoring • Gas & Oil • Infrastructure • Transport • Energy • Geological Survey • Agricultural Surveying • Poaching • Mapping

UK Integration • ITAR FREE • Short Lead Times

Proven Systems and Capabilities for Military and Civil Agencies

Airborne C-3 ISR Solution – Specification Summary

King Air 350ER, cost-effective, twin turbo-prop. More than 7,000 currently in service.

Operationally proven aircraft in the most demanding conditions.

(Example from US Military: In the past three years, a combined fleet of over 60 C-12 King Air aircraft has logged over 350,000 combat flight hours, and more than 70,000 sorties, providing an unprecedented mission availability rate of over 98%).

Endurance @ 29,000 feet ISA (SL), 15,500 lbs. up to 10 hours flight time. @ 16,000 feet ISA (SL), 15,500 lbs. up to 9 hours flight time

(Extended range at 2,000 lb mission pay load)

 Service Ceiling: 35,000 feet

 Cruise, 315 kt

 Mission loiter speed, 120 kt

 Range, 2,300 nm

 Pressurised and Air Conditioned

 Typical crew, 2 pilots and 2 operators, or single pilot and 3 operators or observer

 Certified for single pilot operation

 Certified for steep approach

 Integrated Multi-Function suite – sensors, computers, navigation equipment, data-links

 The latest Proline 21 avionics suite and navigation systems

o Traffic Collision Avoidance System


o FMS/GPS with LPV approaches

o Enhanced GPWS


o EHS and ADS-B

 Comprehensive 24/7, through-life maintenance and support plans available

Modular Design Concept for quick role change, technology insertions and refresh

o System Re-Configuration from Mission to Mission in less than 2 hours.

o Integrated Multi-Function Sensors

Real-Time, Full Motion Video

o High Definition EO/IR Sensors, (e.g. WESCAM MX-15, FLIR Safire 380HDc, or equivalent)

o Color Optical Imaging in the Visible Spectrum and Thermal Imaging in the IR Spectrum.

o Impressive stand-off range enables covert operations

o Low-Light, image blending, meta-data tagging

o Laser Range Finder, illuminators options

o Optional second EO/IR, or specialist sensor available

Advanced, Long-Range, High Fidelity, Multi-Mode, Surveillance Radar

o Maritime Mode

 Automatic Identification System (AIS) – Vessel Identification

 Search and Rescue Transponder detection available (SART)

 Surface Moving Target Indication

o Tactical Overland Mode

 Ground Moving Target Indicator (GMTI)

 High Definition Spotlight and Strip Synthetic Aperture Radar (SAR)


o Automated Direction Finding (DF), Electronic Signal Monitoring (ESM), Lines of Bearing, (LOB)

Tactical Communications

o SATCOM – Real Time ‘Beyond Line of Sight’ (BLOS) Comms/Data

o Real Time ‘Line of Sight’ (LOS) Comms/Data

o Secure Comms/Data System

 Connected to Centralised Command Locations

 Connected to Airborne Assets

 Connected to Mobile, Ground-Based Tactical Assets

 Tactical Common Data-Link (TCDL) available

Primary Mission System

o Mission Operator Consoles; Pilot Cockpit Monitors

o User selectable moving maps

o Cross-queued Sensor integration, EO/IR, Radar, SIGINT, AIS, SART, ANPR, FR

o Evidence Secure Digital Video Recorders

o Remote Sensor Operations for Greater Mission Flexibility, EO/IR, Radar, SIGINT

 Image and target analysis, change detection

 ANPR and Facial Recognition options

 Virtual Target Analysis (VTA), reach-back and change detection

o Roll On – Roll Off Mission Systems

Technology Upgrade Options

o Wide Area Surveillance System (WASS)

o LIDAR, Hyper-Spectral Imaging, Polari-Metric Imaging

o Advanced Airborne Burst Illumination LADAR (BIL) and Burst Illuminating Advanced Targeting Radar (BAT)

o Night Vision Capabilities

o Radar Countermeasures

o Defensive Aids

o Stand-alone wireless IP Mesh Network