May 24, 2024

Bluefin Tuna fishing. Which transducer?


Bluefin Tuna, known for their speed and preference for the open ocean, require specialized equipment to be effectively located and caught. To enhance your chances of finding these fast-swimming, pelagic fish, a fishfinder equipped with the right transducer is essential. The ideal transducer acts like a searchlight, casting a wide beam to locate large individual fish and schools of baitfish within the water column.

For tuna fishing, wider coverage is almost always better. Even when fishing deep water, the primary focus is on the top 100 meters or so of the water column.

High frequencies provide greater target separation at shallower depths, while lower frequencies travel farther and reach greater depths. For tuna fishing, a high-frequency, wide-beam transducer is ideal. An Airmar B175HW, with a 25-degree beam width is an excellent choice for targeting Bluefin Tuna.

For fisherman who also target deep water species like Puka and Bluenose, a combo transducer like the TM275LHW or B275LHW is ideal. This wide-beam, chirp-ready transducer offers a high frequency range of 150-250 kHz with a constant 25° beam width, along with a low frequency that chirps from 42 kHz to 65 kHz. This combo is perfect for searching the upper water column for tuna with a wide beam, while also providing low-frequency coverage for bottom fishing in deeper waters.