14. starptautiskā konference 2012 - Latvijas Jūras akadēmija

Proceedings of 14th International conference „Maritime Transport and Infrastructure - 2012”the real-time mode. All the images and records are being stored in digital data storage device. Theparticularly lightweight apparatus can be launched from almost any unfitted location, where no anytake-off runway is available.UAV’s electromotor dos not emit considerable audio noise or any otherenvironmental pollution [4].Because of small dimensions, low production costs and relatively simplistic operationalprocedures of deployment, micro class UAV is well suited tool for surveillance and reckoning withinshort-to-medium ranges water spaces.Fig.1. UAV Krauklis observation capacity2. Methods of UAV deployment for ice surveillance at seaThe basic methods of UAV deployment as the means of ice conditions surveillance are asfollows:(1) Perspective surveillance, (2) Detailed surveillance, (3) Pre-planned aerial photo surveying.The methods are being implemented depending on missions, particular situation and location wherethe UAV is being launched from. All methods are used either by launching UAV from the vessel’sdeck (preferable) or from ashore with further digital pairing of transmitted operational data withvessel’s bridge IT asset. There are none specific requirements for taking off procedure in matter offree ‘’runway’’, there is need to have just 2-5 meters of upper deck for an individual, who has to hauloff and throw the propelled aircraft into the air. The process of UAV’s after-mission recovery alsodoes not require tremendous technical arrangements. Any ship can be equipped with hand held/poleheld easily mountable UAV’s so called “arresting gear”: fishing net alike simple construction withsufficiently sized cells for soft and safe ‘’arresting’’ of landing UAV on the deck. There is quite ampleaccumulated technical experience worldwide of operating ‘’ship born’’ UAVs. Moreover, UAVlanding on the beach requires just several meters of a terrain free of obstacles, without any additionaltechnical arrangements.The method of perspective surveillance is being used for fast and accurate data acquisition onice situation in advanced direction along the ship anticipated course. The method is being used forservicing a single ship or group of ship in a concerted movement, when UAV is being launched fromthe deck of vessel and all acquired visual data are being digitally delivered and processed on thebridge of ship. This method ensures the ice situation awareness for seafarers. As the practical outcomeof Perspective observations (surveillance)is seafarer understands about: (1)Where are the least59