Anything inside 40km and theoretically you're detectable. Don't start worrying about it until within 20km. Stay under thermoclines to get closer, or if there is none, stay close to the seabed. On an OHP with Lwami 3.02 we can get returns on objects about 20km away but the signals are very weak. But the signals can be localized using single beam mode. So keep that in mind. Using the layer is an effective tool for getting past surface ships.
|