Acoustic transducer for towed seismic pinger

An underwater transducer assembly for attachment to marine equipment, the transducer assembly comprising:

• an attachment portion extending along a first axis, the attachment portion having a first body with a first end and a second end, at least a portion of the first body having a first diameter, the first body formed of a first material having a first acoustic impedance;
• a transducer portion extending along a second axis, the transducer portion having a second body with a first end and a second end, the second body having a second diameter that is smaller than the first diameter, the second body formed of a second material having a second acoustic impedance that is less than the first acoustic impedance;
• and
• a transducer element disposed within the second body;
• wherein the transducer portion is detachably coupled to the attachment portion;
• and
• wherein the first axis and second axis intersect to form an angle that is equal to or greater than 60 degrees and equal to or less than 180 degrees.

An underwater acoustic ranging assembly comprising:

• a semi-buoyant marine component;
• and
• and transducer assembly attached to the marine component, the transducer assembly comprising:
• an attachment portion coupled to the semi-buoyant marine component, the attachment portion extending along a first axis and having a first body with a first end and a second end, at least a portion of the first body having a first diameter;
• and
• a transducer portion extending along a second axis and having a second body with a first end and a second end, at least a portion of the second body having a second diameter that is less than the first diameter;
• wherein the first axis and second axis intersect to form an angle that is greater than 0 degrees and equal to or less than 180 degrees.

An underwater transducer assembly for attachment to marine equipment, the transducer assembly comprising:

• an attachment portion extending along a first axis, the attachment portion having a first body with a first end and a second end, at least a portion of the first body having a first diameter, the first body formed of a first material having a first acoustic impedance;
• a transducer portion extending along a second axis, the transducer portion having a second body with a first end and a second end, the second body having a second diameter that is smaller than the first diameter, the second body formed of a second material having a second acoustic impedance that is less than the first acoustic impedance;
• and
• a transducer disposed within the second body;
• wherein the first axis and second axis are colinear.