Satellite Buoy (KT-800D, KT-690S) & Satellite Echo Sounder Buoy (KT-690SF)
Satellite buoy is specifically designed for the purse seine fishing fleets and long-line fishing vessels to promote sustainable and effective tuna fishing. KT-690 is built-in SkyWave’s newest Isatdata Pro terminal and scientific echo-sounder, which can provide reliable data massages via Inmarsat IDP global satellite network with highest payload and lowest latency of any L-band satellite store-and-forward service. It is equipped with four pieces high efficient solar panels, rechargeable battery, temperature sensor, four LED flashlights and magnetic switch. Also, it can be moored on driftwoods or any floating objects (FADs), and will provides the real time information to fishing vessels.
Function
- Immediate response: GPS location, currents, temperature and battery power.
- Receiving range covers the whole world via the Inmarsat IDP global satellite.
- Receive information via SBS-02 or e-mail (FBB, Mini C, etc.).
- Powerful LED flashlights, indicates the buoy’s position.
- Free of maintenance, replacements and consumables.
- The robust design of the product, extending its useful life.
Specification
| Echo sounder | 75 KHZ |
| Protocol | Inmarsat Isatdata Pro |
| Power Source | 6 VDC / Solar rechargeable battery |
| Diameter | 380 mm(max) / 200 mm(min) |
| Height | 260 mm |
| Weight | 11.5 kg |
| Water Tightness | 1bar (10M) |
| Operating Temperature | -10 ºC to +70 ºC |
Hardware and software systems
Read more : Automatic Direction Finder
Types of Wind Indicators
There are three main types of wind indicators that are available in the market today. They are:
TYPE I: The first type of wind indicator is the most basic type. This type of wind indicator is known as the Luff Telltales (luff is that part of the ship’s sail that is very close to the wind). Luff Telltales are wind indicators that are generally attached to the sails rather than kept separately on the ship.
TYPE II: These types of wind indicators are known as Shroud and Stay Telltales. They are better designed than the previous type of wind indicator as the person navigating the ship can see clearly the indication of the direction of the wind. In the Type I variety, since the wind indicator is attached to the sail, indication of the wind direction is somewhat unclear.
TYPE III: This variety of wind indicators is the best out of the three. They are completely modern and function electronically. This helps to reduce the margin of errors that could happen if the wind direction is monitored with the help of mental calculations (like in the previous two varieties). The wind indicator needs to be placed at the top of the mast. This type of wind indicator also monitors the speed of the ship accurately along with the direction of the wind.
The role and responsibility of a wind indicator is unique. The uniqueness and reliability are the factors that make wind indicators one of the most necessary aspects of marine travel, even though many technologies have developed to assist shipmen in the present times.
