On October 3, 1883, prior to leaving for Alaska, the Pinta collided with the civilian brig Tally Ho off the coast of Nantucket. Sebree was not held directly responsible for the collision, as he was below deck at the time, but it was alleged that he did not do enough to determine whether the other ship was damaged before sailing away. Charges were brought against him in November and in December he was found guilty of "culpable negligence and inefficiency in the performance of his duty".
On October 3, 1883, before setting sail for Alaska, the Pinta collided with the civilian brig Tally Ho near Nantucket's coast. Sebree was not held directly responsible for the collision as he was below deck at the time, but it was alleged that he did not sufficiently check if the other ship was damaged before departing. Charges were brought against him in November and in December, he was found guilty of "negligence and inefficiency."