Ein Harnröhrenkatheter zur Verankerung in der fossa navicularis umfasst einen Katheterkörper (12) mit einem in der Harnröhre (20) zu platzierenden Harnröhreneingriffsbereich (28) und einem in der fossa navicularis (30) zu positionierenden und zur Verankerung erweiterbaren Ballonbereich (34) im Harnröhreneingriffsbereich (28).The catheter (10) has a catheter body (12) with a urethra engaging portion (28) to be placed in a urethra (20), and a balloon portion (34) provided in the engaging portion. The balloon portion is extended for anchoring and positioning the catheter in a fossa navicularis (30), where the balloon portion has length (a2) in a range of 1 to 3 cm, and the engaging portion has the length in the range of 2.5 to 5.5 cm. An indicator is provided in a reference portion (46) for indicating penetration depth of the catheter body into the urethra.