HMS Lancelot was a Roland-class destroyer of the Royal Manticoran Navy.
One of the first ships of its class, she was completed in 1921 PD and commanded by Captain (JG) Ellen Seacrest. She was assigned to Destroyer Squadron 301 and deployed to the Tenth Fleet in the Talbott Quadrant. While operating in the Quadrant, she was destroyed by Admiral Josef Byng's Task Group 3021 during the New Tuscany Incident. (SI2)