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Security at sea: where technology benefits marine environments
Security at sea: where technology benefits marine environments

The term ‘marine’ comes from the Latin mare, meaning sea or ocean, and marine habitats can be divided into two categories: coastal and open ocean. Video surveillance (VS) applications can cover both types of marine environment with system for ships, maritime ports, onshore and offshore installations, etc. We should want to further analyse VS for ships and try to explain the types of ships on which it can be used, the ways in which VS can be used on ships, the typical certifications in use and what features a camera station must have to be installed on a ship. Starting with ships that have a minimum tonnage, around the world we have: liquefied natural gas (LNG) tankers, passengers ships, chemical tankers, crude oil tankers, container ships, general cargo ships and bulk carriers.As the LNG market grows rapidly, the fleet of LNG carriers continues to experience tremendous growth, offering more opportunities for VS Video surveillance for all marine vessels An LNG carrier is a tank ship designed for transporting liquefied natural gas. As the LNG market grows rapidly, the fleet of LNG carriers continues to experience tremendous growth. A passenger ship is a merchant ship whose primary function is to carry passengers by sea. This category does not include cargo vessels which have accommodation for a limited number of passengers, but rather includes the likes of ferries, yachts, ocean liners and cruise ships. A chemical tanker is a type of tank ship designed to transport chemicals in bulk. These ships can also carry other types of sensitive cargo which require a high standard of tank cleaning, such as palm oil, vegetable oils, tallow, caustic soda and methanol. An oil tanker, also known as a petroleum tanker, is a merchant ship designed for the bulk transport of oil. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined crude oil from its point of extraction to refineries. Product tankers, generally much smaller, are designed to move refined products from refineries to points near consuming markets. Container ships are cargo ships that carry their entire load in truck-size intermodal containers: a technique called containerisation. They are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo. Today, about 90% of non-bulk cargo worldwide is transported by container. A cargo ship or freighter ship is any sort of ship or vessel that carries cargo, goods and materials from one port to another. Cargo ships are specially designed for the task, often being equipped with cranes and other mechanisms to load and unload, and come in all sizes. Bulk carriers make up 15%–17% of the world's merchant ships and they are specially designed to transport unpackaged bulk cargo such as grains, coal, ore and cement in its cargo holds. For all these ships the protection of vessels, cargo and crew is a priority, that’s why the adoption of VS technology plays a key part in terms of security and safety. Human error is regularly named as a major factor in ship accidents, and one way to avoid it is to aid seafarers by providing them with technology and equipment that is reliable and easy to use in all weather and sea conditions. Marine VS encompasses liquefied natural gas (LNG) tankers, passengers ships, chemical tankers, crude oil tankers, container ships, general cargo ships and bulk carriers Emergency security solutions on ship One of the most important applications for camera stations is during “docking”. Mooring is the securing or confining of a vessel in a particular location with a fixed or a floating object (jetty, pier, ship, barge, buoy, etc.) as various cargo operations are carried out. Docking is the final stage of mooring operations when the ship docks to the jetty. This is a very delicate operation and cameras are very helpful in making sure docking is done without accidents.'Man overboard’ is an emergency in which a person has fallen off a boat or ship into the water, and can happen at any time during the day or night Another important application for camera stations is the Man Overboard detection system (MOB). ‘Man overboard’ is an emergency in which a person has fallen off a boat or ship into the water. Man overboard events can happen at any time during the day or night, in all types of weather and sea conditions, and from almost any location on the ship, ranging from a few tens of feet above the water, to over 180 feet.  When these events occur, the immediate availability of important data is crucial. Accurate confirmation of the event including time of occurrence, location on the ship and location in the sea is critical. A proactive detection system must immediately and accurately detect man overboard events and provide prompt, actionable data to response personnel. A typical man overboard detection system can report a MOB event in under 1 second. VS on a vessel can also monitor the engine room at all times and provide a good view of people working on dock, machinery and stowed equipment. But what are the most important features that a camera station must have to work in one of the most aggressive environments in nature? Marine surveillance must operate in one of the most harsh environments in nature Ruggedised reliability in surveillance First of all, and perhaps it’s obvious, but it’s extremely important to have camera stations with amazing reliability. Housing units manufactured from AISI 316L stainless steel, passivated and electropolished, makes the cameras completely impervious to air, water, rusting and corrosion, therefore offering excellent weather protection and increased reliability. Housing units manufactured from AISI 316L stainless steel, passivated and electropolished, makes the cameras completely impervious to air, water, rusting and corrosion Sometimes ships also use cameras constructed entirely from technopolymer, which guarantees high impact resistance and superior protection from external weather agents. Keeping the camera glass clean at all times is another essential feature, and it can be done via a wiper/wash system that greatly reduces the need for maintenance. In the case of PTZ cameras, the best option would be a great pan and tilt speed (up to 100°/s). What is the operative temperature range for the cameras? Sea is everywhere and therefore ships go everywhere, from the Arctic Ocean to the Mediterranean, so we need cameras that have to be fully operational across a wide temperature range.  -40°C to +65°C covers almost all areas. Analogue or IP Cameras? Actually, both options can be used, especially for applications like docking where it’s important to avoid image delay (as can happen with IP cameras due to the natural latency of data communication over a network). Marine certifications Last but not least, the certifications: Certifications guarantee the quality and reliability of camera stations. There is no compromise! One important certification is the Lloyd’s Register Type Approval which subjects cameras to rigorous testing for performance, vibration (critical on ships), humidity, etc. The application field of the LR Type Approval is VS in public places (e.g. passenger ships), open decks, enclosed spaces that are subjected to heat generated from other equipment, and technical premises. Often, VS cameras used in specific areas of ships, such as hazardous areas, are required to have ATEX and IECEX certifications.

Networking basics for security professionals: The 60 Watt dilemma
Networking basics for security professionals: The 60 Watt dilemma

Standards for camera manufacturers presented a new challenge with the introduction of security cameras that require more than 30 Watts of power Standards for camera manufacturers presented a new challenge with the introduction of security cameras that require more than 30 Watts of power. Many of these involve pan-tilt-zoom (PTZ) domes and heaters and blowers that require additional power. This development created two areas of confusion which is highlighted in this article by Neil Heller - Vice President, Vigitron. The first is the ability to define what a 60-watt camera is and what power sources are actually required. The second and more serious is how to provide that power. Both share a commonality in that they lack any form of standardisation. PoE to power 60-watt security camera alone? Let’s start with the definition of the 60-watt camera. As the term suggests, it requires 60 watts or greater, but that doesn’t necessarily mean all the required power comes from a single PoE source. In many cases, camera manufacturers require that PoE only power the camera itself. Looking at these cameras’ power specifications will indicate a required PoE power of 802.3at or 30 watts, thus leaving power to the heaters and blowers requiring a local AC power source. This situation brings into question the value of PoE power if it is restricted to only providing camera power. Another group of PTZ cameras does use PoE for both camera and heater/blower functions, but only when the heater operates within a restricted temperature range. This usually means if your camera is installed in areas where the temperature that can fall below -20 degrees C (approximately -20 degrees F) you will still need a local power AC power source. The third type of security camera relies only on PoE power for both PTZ and heater blower operations.  This is confusing, and is often the source of users finding their PTZ has failed at the most inopportune time. Any attempt to transmit 60 watt power over coax cable that is only a single pair should be considered with a great deal of caution, requesting from the transmission equipment provider that they will accept liability for any damages PoE for greater than 30 Watt applications The three different operations of how these “PoE” cameras are powered brings into question the value of using PoE for greater than 802.3at, 30 Watt applications. Value exists in the ability to centrally control power operations from a single accessible point. Certainly those cameras that are solely dependent upon PoE have the greatest advantage. This brings to the second point of confusion, the composition of the PoE power. To review a brief history, 802.3af (15.4) was the first PoE standard used for IP cameras and is for the most part a standard. 802.3at (30 Watts) was introduced as four different standards, two of which, Type 1 and Type 2 are supposed be compatible, but in reality are not.     Transmission restriction over physical cables 60 watts has no standards. To understand this, we need to look at the limitations of transmitting power over physical cables. Any form of transmission over a physical media has limitations in the form of resistance. As resistance increases, so does the heat generated by this process. The higher the power, the greater the resistance and resulting heat generated. Based on CAT5e cable, a single wire can handle about 0.75 amps. In PoE transmission, power is transmitted on a pair of wires or 0.75amp X 2= 1.5amps.  According to the 802.3at specifications, Class 4 specifications generally are considered to start around 48 volts. So we take 48 x 0.75= 36 watts or 72 watts for the pair. Dual PD (power device) system So how do we get to 60 watts? For “over” 30 watts, camera manufacturers use a dual PD (power device) system. In short, it operates as if it where two IP cameras and requires use of all four pairs within Cat cabling. Exceeding these power limits can be dangerous in overheating the cable and its installation. Therefore, any attempt to transmit 60 watt power over coax cable that is only a single pair should be considered with a great deal of caution, requesting from the transmission equipment provider that they will accept liability for any damages. The need to operate two PDs within a single camera is where the incompatibility exists. There are no standards as to the sequence of turning on  separate PDs in a single camera The need to operate two PDs within a single camera is where the incompatibility exists. There are no standards as to the sequence of turning on separate PDs in a single camera. Most such camera manufacturers provide their own PoE source in the form of a PSE or camera power supply; however, don’t try to interchange these power sources among different cameras from different manufacturers as they will not work. If you attempt to use a third party version, make certain you confirm that the power source manufacturer has actually conducted certification testing and can provide proof of compatibility or provide any operational limitations. Distance of transmission Finally, there is the question of transmission distance. This takes us back to the physics of high-powered PoE transmission. Even with manufacturer-supplied PSEs, the distance limitation is still 328 feet (100m), the Ethernet standard. Most applications such as perimeter and parking lots will be hard pressed to find a power outlet within 328 feet of where the cameras needs to be installed. This is where third-party transmission equipment providers come into play, but again the ability of transmitting 60 watts PoE power for distances greater than 328 is more complex that standard 802.3af and 802.3at, and more limited. This combined with the non-standard make a detailed knowledge and interaction with the manufacturer critical to a successful installation.

Latest Videotec news

Videotec added video analysis and advanced GeoMove features to NVX video cameras
Videotec added video analysis and advanced GeoMove features to NVX video cameras

With the goal of constantly improving the performance of its products, Videotec has now added the new video analysis and GeoMove functions to its NVX cameras. This versatile compact stainless-steel camera is already well known on the market for its exceptional corrosion resistance and for providing high image quality with Full HD, super low-light, 1080p and 30x zoom, with bright clear colours in even the poorest lighting conditions. The NVX camera is used in the maritime sector onboard vessels or as part of traffic control in ports, as well as on railways, transport and industrial process environments. Accurate detection The NVX has been enhanced with Videotec Analytics technology which integrates robust algorithms to ensure accurate detection in even the most adverse external environmental conditions. It offers the operator complete situational awareness at all times. The detection algorithm even works with rain, snow, or low contrast, camera vibrations, sudden changes in changes in light or shadows and in the presence of small animals or insects. Alarm activation Depending on the rules set up by the user, an alarm is generated if an item enters, exits, appears or stopsDepending on the rules set up by the user, an alarm is generated if an item enters, exits, appears or stops for too long within an area. Any violation of these rules will activate the alarm and the other programmed actions. Up to ten rules for each preset can be quickly and easily set up. GeoMove function A particularly interesting feature is the possibility of geo-localising the NVC video cameras on maps to support the new GeoMove and GeoMove&Track features in combination with one or more Videotec PTZ cameras. The GeoMove feature is very useful in perimeter surveillance systems and for port traffic monitoring because it lets the video cameras detect and capture any object through its geographic coordinates, even in critical visibility conditions. Integrated analytics The GeoMove function can be activated via an NVX camera with integrated Videotec Analytics which provides the target’s coordinates to one or more Videotec PTZ(s) and they, in turn, use the coordinates to frame the target. Coordinates can also be sent via third-party software, such as VMS (Video Management Software) or VTS (Vessel Tracking Service) for navigation control, or via radar control systems. GeoMove&Track function GeoMove&Track provides the advantage of having a turnkey detection, positioning, and tracking solution Furthermore, if the PTZ that receives the target’s coordinates has Videotec Analytics integrated, then it can also start the GeoMove&Track function, independently recognising and autonomously tracking the geolocated target. Thanks to GeoMove&Track, the system made up of Videotec fixed and PTZ cameras provide the advantage of having a complete, turnkey detection, positioning and tracking solution guaranteed by Videotec. Marine environment The NVX camera is Lloyd's Register Type Approval System Test Specification Number 1 certified and can therefore be used in marine environments. Such as on boats and ships on open decks, in enclosed spaces, in technical areas that are subject to the heat generated by other equipment or as visual support for docking manoeuvres. Weather protected The total protection against inclement weather and the option of cleaning the camera with high-pressure and high-temperature water jets is guaranteed by the IP66/IP67/IP68/IP69 protection grades. The NVX has been tested and certified from -40°C to +65°C. Models with an integrated wiper or with a polycarbonate window are available for use in the food industry. Design and integration Mounting an NVX is quick and easy, even in confined spaces, thanks to its compact design, lightweight, practical quick-fit connectors and versatile modular support for mounting on walls, ceilings or parapets. Developed entirely by the Videotec R&D team, NVX offers the Videotec guarantee of being a reliable, cyber-safe and future-proof platform that can be easily integrated with third-party products.

Videotec launches COMB, the new polycarbonate communication box
Videotec launches COMB, the new polycarbonate communication box

Videotec has expanded its range of communication boxes with the new COMB. This product has been designed for use in non-hazardous applications and is robust with its external polycarbonate and extraordinary resistance to external agents. COMB is much more than a simple junction box. It has everything that you need for a state-of-the-art installation and correct operation of one or more Videotec IP or analogue cameras. It provides local low voltage power to connected devices. Functions and features COMB enables fast Ethernet connection thanks to the integrated Ethernet switch equipped with three RJ45 ports and an SFP port (MSA compliant) for fibre optic connection. COMB comes with an extended/industrial range of electronics. The internal board offers 2 bypasses for analogue video signals and 2 bypasses for I/O signals with multipolar connectors. COMB can manage systems that consist of a Videotec PTZ camera with or without the Videotec washing kit; up to two Videotec fixed cameras with or without the Videotec washing kit; or one Videotec fixed camera and one Videotec PTZ without washing kits. Internally, the unit has been designed with easy cable access and convenient connection operations in mind. COMB guarantees maximum protection against impact (IK10) and weather (IP66/IP67/IP68/IP69, and NEMA TYPE 4X and TYPE 6P). Obtained Lloyd’s Register Marine Type Approval certification for the maritime and naval sector. It also complies with railway application standards. COMB is the competitive integrated solution for the professional installation of Videotec cameras in industrial and marine environments.

Videotec announces NXPTZ SERIES2, the new PTZ in stainless steel for corrosive environments
Videotec announces NXPTZ SERIES2, the new PTZ in stainless steel for corrosive environments

Videotec, a company with more than thirty years of experience in stainless steel product development for video surveillance in marine offshore/onshore and corrosive industrial environments, announces NXPTZ SERIES2, the new generation of PTZ Full HD video cameras with innovative and high-performance features for outdoor preventive security applications in the most difficult environmental conditions. PTZ product range The PTZ range has been completely revamped and expanded to include visible Day/Night Super low-light, FullHD 1080p-60fps video cameras with DELUX or SONY FCB-EV7520 technology, capable of producing impeccable image clarity even in the most difficult lighting conditions. New thermal PTZ or dual vision network PTZ models are also available for extreme precision in the detection and perimeter monitoring and high-risk environment monitoring and monitoring with poor lighting conditions. The integrated thermal video cameras also offer radiometry features for precise temperature readings, useful in monitoring industrial processes. Intrusion detection for outdoor applications Videotec analytics uses algorithms for accurate detection and precise auto-tracking in most adverse environmental conditions Advanced video analysis features are now available for these PTZ cameras, thanks to Videotec Analytics. This excellent new technology in preventive intrusion detection for outdoor applications, developed entirely by Videotec, uses very strong algorithms for highly accurate detection and precise and fluid auto-tracking even in the most adverse environmental conditions. The detection algorithm is particularly reliable even with the rain, snow, camera vibrations, low contrast, sudden changes in light or shadows and in the presence of small animals or insects. Perimeter surveillance systems The new NXPTZ SERIES2 PTZ video cameras can be geo-localised on the maps to support the GeoMove and GeoMove&Track features. The GeoMove feature is very useful in perimeter surveillance systems and for port traffic control because it lets you capture any target through geographic coordinates, even in critical visibility or offshore conditions. Video management software In a video surveillance system, the GeoMove feature can typically be activated using a camera with Videotec Analytics on board, or through third-party software such as Video Management Software (VMS), which provide the geographic coordinates of a target and use them to guide the Videotec PTZ cameras to capture the target. The coordinates can also be sent in the same way using Vessel Tracking Services (VTS - navigation control services) or using radar control systems. Video analytics SERIES2 video camera can connect the PTZ over fibre optics owing to the SFP module slot on the base unit Furthermore, PTZ video cameras with Videotec Analytics on board can activate the GeoMove&Track feature. In this case, the Videotec PTZ camera that receives the coordinates of the target, thanks to the video analytics, can also recognise and autonomously follow the geo-localised target. Compared to the previous generation, the SERIES2 video cameras can easily connect the PTZ over fibre optics, thanks to the SFP module slot installed directly on the base of the unit. Operating efficiency The NXPTZ SERIES2 PTZ cameras can operate in corrosive environments, thanks to their solid construction in AISI 316L stainless steel with micro shot-peened and electro-polished surfaces, and the extreme precision adopted during the construction processes. The IP66/IP67/IP68/IP69 grades, in addition, to guarantee total protection against inclement weather, allows the device to be cleaned with high-pressure jets of hot water and temporary submersion. NXPTZT SERIES2 maintains maximum operating efficiency with temperatures from -40°F to +149°F. Quality, cyber security, reliability Videotec owns the design know-how for all of its products and this allows total control of mechanics, electronics, positioning, networking, software and firmware. This represents a significant competitive advantage in meeting the needs of personalised solutions or integrations with third-party systems, all with the guarantee of Videotec quality, cyber security and reliability.