user: Question: How many knots did the ms moby vincent have when passengers was less than 1.6?
Columns: ['Ship', 'Built', 'Entered service', 'Route', 'Gross tonnage', 'Length', 'Width', 'Passengers', 'Vessels', 'Knots']
Types: ['text', 'real', 'real', 'text', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['MS Bastia', 1974.0, 1974.0, 'Santa Teresa di Gallura — Bonifacio', 'GT', '75 m', '13 m', 400.0, 100.0, 18.0]
SQL:

assistant: SELECT "Knots" FROM "Table" WHERE "Ship" = 'ms moby vincent' AND "Passengers" < 1.6;