Category Archives :technology suggestion

The distress call should only be used if your vessel is threatened by grave and imminent danger and you are requesting immediate assistance. It has absolute priority over all other transmissions and may only be transmitted on the authority of the skipper or the person responsible for the safety of your vessel. Repeat the distress call as often as necessary until you receive an answer. If no answer is received on distress frequencies  ...

Marine radios In an emergency, communication is vital and a marine radio is essential. Mobile telephones, although useful as a backup communications system, cannot replace a marine radio.  ...

you don’t want to be fumbling about trying to remember the training when you really need it.. You, as skipper, should have a good understanding of how it works, how to adjust it and how to send an emergency message. Ideally, at least one other person aboard should also have a working knowledge of the basics.  ...

Certificate held by Masters, Deck Officers or other shipboard personnel who perform radiocommunication duties on ships fitted with GMDSS equipment. Requires detailed practical knowledge of operation of all GMDSS sub-systems and equipment, ability to send and receive correctly by radiotelephone and narrow band direct printing (telex). Examined to the European Radiocommunication Committee (ERC) Decision ERC/DEC/(99)01, as amended, which is based on the harmonised syllabi developed by the  ...

Recreational marine VHF antennas are usually broken down into three categories: 3- or 4-foot sailboat antennas (3dB gain), 8-foot powerboat antennas (6 dB gain) and 16-plus-foot, long-stick antennas (9+ dB gain). The antenna gain is a ratio related to an antennas effective radiated power (ERP) instead of a fixed quantity value.  ...

Whichever option you choose, having AIS on your boat will without doubt make your sailing experiences safer. As well as less stressful in poor visibility or when crossing busy shipping lanes. Even a simple receiver with a small whip antenna at deck level is effective. Allowing you to keep informed of what ships are around and which ones you need to keep an eye on.  ...

AIS is a tool to reduce the hazard of collision with another vessel, and from a small-boat standpoint, this basically means not placing your vessel in the path of another. Both the International Regulations for Avoiding Collision at Sea (commonly called COLREGS) and the U.S. Inland Navigation Rules spell out the maneuvers required of all vessels when avoiding collision. Correctly interpreting AIS information to accomplish this requires a working knowledge of AIS characteristics.  ...

Its been several years since the Automatic Identification System (AIS) became a mandated way of life for the commercial side of the marine industry. it has become one of the more valuable electronics  ...

Retevis Marine is committed to providing good marine radio to customers, so often communicate with them. During the communication, we found that many customers still don’t know how to send DSC calling or when they can send DSC calling. Today, we will make a brief introduction about DSC calling.In a relay situation, there is no longer a requirement to send a DSC ‘Urgency Announcement’. The ‘Mayday Relay’ voice call remains unchanged and should still be transmitted as normal.  ...

Marine VHF radio belongs to analog radio in terms of system. It can realize convenient communication without network support. It is often used in fishing boats, passenger ships, cargo ships, yachts, kayaks, sailboats, ports, docks and so on. Generally, the use of marine VHF radio requires a use certificate, that is, a certificate. To obtain this certificate, you need to log in to the local maritime department to find and sign up. Let's talk about the characteristics of marine radio.  ...