"Theodore Roosevelt"'s second tour of duty operating from the Scotland base proved to be very brief in comparison to her first. Between mid-June 1967 and February 1968, she completed her 18th through 21st patrols. On 20 March 1968 while returning to Holy Loch from her 21st patrol, she ran aground off the western coast of Scotland. After drydocking for temporary correction of the damage, she departed Holy Loch on 5 April 1968 to return to the United States for permanent repairs. Between 18 April and 20 April 1968 she unloaded her missiles at Charleston and headed north to New London. On 23 April 1968, she arrived in the shipyard of the Electric Boat Division and commenced an extended repair period. Labor disputes caused delays, and "Theodore Roosevelt" did not complete her repairs until mid-October 1968. She spent the latter part of that month in sea trials and then departed New London on 2 November 1968 on her post-repair shakedown cruise. She visited Norfolk, Virginia, Puerto Rico, and St. Croix in the United States Virgin Islands before concluding the cruise at Charleston on 27 November 1968. She conducted training operations out of Charleston before deploying to Holy Loch again early in 1969.