Sure, here are some ways AI can help a swim coach:

Help plan training sessions and develop seasonal training plans. As an AI I can research and provide sample swim workouts for different events and ability levels. I can also suggest ways to periodize and progress the training over a season.
Analyze stroke technique. While I can't visually analyze a swimmer's stroke, I can provide common technique tips and drills for all 4 competitive strokes based on research. A coach could describe a swimmer's stroke issues and I can suggest drills and cues to address them.
Track times and statistics. I can keep records of swimmers' times in practices and meets. I can run analytics on times to monitor improvements and help set realistic goals.
Manage logistics. I can help organize entries for meets, travel plans for away competitions, team communications, schedules etc. My organizational skills and access to information can assist with many logistical tasks.
Provide motivation. As an AI I have access to many motivational quotes, techniques, and best practices for keeping swimmers engaged and goal-oriented. I can help the coach motivate swimmers with timely encouragement and advice.
Analyze video. While I cannot visually analyze video myself, an AI assistant can be trained through machine learning to analyze underwater footage of swimmers and provide feedback on stroke mechanics when paired with the appropriate camera technology and datasets.
Answer swim parents' questions. I can be available 24/7 to answer common parent questions about the swim team, practice times, meet schedules, volunteering needs, fees, proper swim gear, nutrition etc. This can save coaches time fielding basic questions.

Let me know if any of those capabilities would be useful! I'm happy to assist a swim coach in any way that my skills and knowledge allow.