Course to steer, tidal diamond J

Exercise book 3.1 · on paper you need RYA chart 3, the tidal almanac, the deviation card

On 28 May at 1055 SPDST you leave 45°59.70'N 005°54.56'W for 45°51.77'N 005°49.36'W. The boat makes 6.5 knots, there is no leeway and variation is 6°W. Use tidal diamond J. What compass course should you steer, and how long will it take?

Starting position: 45°59.70'N 005°54.56'W
Destination: 45°51.77'N 005°49.36'W
Boat speed: 6.5 kn
Variation: 6°W
Victoria 28 May (UT): HW 1125 5.5 m; LW 0509 0.6 m, 1731 0.8 m
Diamond J, HW−2: 120° 3.7 kn springs / 1.9 kn neaps

Solution worked out by us from the course material: to be checked by the instructor.