GPS frequency: 1575.42 ± 5MHz, Beidou frequency: 1561 ± 5MHz. Compatible with Boat Ship Marine GPS Navigation System Unit Modem Receiver Transducer Explorer Fish finder Sounder. External Marine ...

There is growing concern about the conservation of seabirds. Globally, their conservation status is worsening at a much ...

A federal judge dismissed a lawsuit by five Maine lobstermen who alleged that the state's rule requiring tracking devices on their boats was in violation of their rights against unreasonable search ...

There is growing concern about the conservation of seabirds. Globally, their conservation status is worsening at a much faster rate than for any other group of birds. Today, about 30% of seabirds are ...

Moreover, it is possible to revisit the points precisely with the GPS waypoint feature (see Section 10.15). As the operation of marine seismic surveys is very expensive, the issue of quality control ...