Based on the episode "Odd Man Out" San Antonio helps a new crewman save his marriage.
San Antonio watched her latest addition to her crew with some concern. He was good at his job for a Petty Officer new to the job. She had yet to get a taste of his cooking skills but he was supposed to be one of the best on the base. He was only going out to sea because her old Petty Officer broke his foot. She never liked his cooking anyway. Why she was concerned for his replacement began with the introduction of a JAG lawyer.
There was word of a JAG lawyer on base, ordered in to help with the backlog of legal cases. San Antonio was helping direct men on a crane as they lowered a missile into its hatch. It was a tricky operation as the hatches on her back were extremely sensitive, one wrong move and the submarine could be sent into a frightened frenzy. And that's exactly what happened. The clang had both the captain and the JAG lawyer's heads snapped about in her direction. They were off running for her the moment she lunged forward, snarling. Restraints and a bridle on her head kept her from going far but she still thrashed, fins striking the pier and causing damage. The JAG lawyer risked getting in close, grabbing her reins as they snapped towards him. Sheer muscle wasn't going to work and the lawyer opted instead for a more practical approach. A simple finger press to a pressure point on her neck and San Antonio was down on her belly, her breaths coming in quick huffs as she relaxed. "Good girl." The lawyer side. The sub looked up at him, noticing the familiar gold dolphins on his chest. "You're a bubblehead." She said. "Aye." He agreed. "Huh. Tell the rookies up there to be more careful." She gestured with a fin to the men still sitting chilly in the crane. Apparently this wasn't their first sub freakout. "I will." He promised. He gave her a scratch behind the ears and she purred. She could trust this man.
...
"So the captain won't let him go see his wife, even if it would save his marriage?" San Antonio asked. "Nope. He wants me to do it." "Typical." She and the lawyer who she'd sense learned was named Sturgis (yes, she had a laugh at that one) were at her dock. The submarine was nearly ready to go out to sea on a 60 day patrol. "Even if it will save his marriage? How sad." The sub sighed. "You know that's the saddest thing I have to see on my job. I've never had to see anyone die thank the Ancients but to see those wives as their husbands pull away. You know, the last thing they see is their husbands going off with another woman." "They're husbands are doing their duty." Sturgis said. "Black Woman, that Other Woman, Mistress, Black Mistress. Bleepity bleep bleep." San Antonio said. "I've heard all that and more." "So have I. And it rhymes with the good ship, the ship that brought my husband home." Sturgis countered. The sub snorted. "They're forced to share their husbands because of me. I'm not a friend, I'm a threat to them. I'm a threat to their marriage, their family. I mean if something happens it's my fault!" "Not necessarily." Sturgis said. "Angel Shark was entirely on the Russians." The Ohio-class sighed. "Help me with this." Sturgis begged. "You're the only one with the authority to override the captain's orders." The sub was thoughtful. "You'd be saving a marriage. That's not exactly something that would make you a threat." He encouraged. "There is that." She sighed. "Very well, I shall do as you ask."
...
"Um sir, where are we going exactly?" The Petty Officer asked. "I thought I was going to see my wife." "You are." Sturgis replied. "But as you know the captain does not approve." "So I'm going against orders then." The Petty Officer said. "Not exactly." The Petty Officer looked confused so Sturgis explained. "The captain's authority only extends so far. Sometimes his orders can be overriden." "But I thought no one could do that." "One can." Sturgis replied just as San Antonio climbed out of the water, shaking herself off as she shrunk to the size of a Great Dane. "Thanks for the gift." Sturgis commented, ringing out his coat. The sub giggled. "Sorry sir." She turned to the Petty Officer. He'd gone pale. He now knew why Sturgis had insisted that he bake a fresh pie and bring it with him. The initiation for a cook involved bringing a food offering to the submarine. If she liked it you were welcomed aboard. If not, well let's just say there are never any repeat offenders. With shaking hands he set the slice of raspberry filled pie down in front of her and backed off, head respectfully bowed. San Antonio approached and sniffed it once, twice before taking a bite out of the corner. Bits of crumbly bred fell out of her mouth as she chewed. She must've liked it for the slice was gone in a few quick bites and she was soon shoving her nose into every nook and cranny on the Petty Officer, searching for more. Sturgis laughed. "Good I take it." He said. "Best pie I ever had." She grinned. "How'd you know I liked raspberry?" The Petty Officer exchanged glances with Sturgis. "A lucky guess?" He tried. The sub snorted her disbelief but didn't press the issue, falling in beside him. Her head was right next to his left hand and she purred as she was stroked.
Sturgis hung back with San Antonio as the Petty Officer went into the diner and came back out with his wife. The pair were speaking urgently to one another and it appeared that they'd made up. "Sweetie, it seems only fair that I give you the opportunity to meet the woman that will me sharing me." He gestured to San Antonio as she approached. The submarine could smell the scent of coffee and treats from a distance and put on her best cute face. "Aww." No worries about slaps or catfights here. The wife was taken by those eyes instantly. San Antonio purred like a kitten as her neck and ears were scratched before rolling on her back, fins pawing at the air. "You're just a sweet puppy aren't you?" San Antonio licked her face. "Ack, fishy!" The wife squealed but she was laughing. San Antonio grinned also, dissolving into happiness as she was rubbed and petted. Maybe this wife wouldn't be so bad after all.