Session Details

Wubbo Roelfsema

Wubbo Roelfsema

Thursday 18 December 2025

Spot - IJsselmeer - Medemblik Netherlands

Board - Gong Cruzader Point FSP pro 6.0XL, 2024

Sail - Gong Pulse 6.0, 2024

Fin - - North HA 850 850

GPS - Suunto Race S

Max 2 sec

23.48 knots

Average speed

22.52 knots (22.8 22.58 22.44 22.42 22.36)

100m

22.91 knots

250m

22.19 knots

500m

21.75 knots

500m

21.75 knots

1/2 hour

14.43 knots

1/2 hour

14.43 knots

Hour

11.86 knots

Duration

01:38:58

Hour

11.86 knots

Duration

01:38:58

Nautical Mile

19.17 knots

Alpha racing

15.56 knots

Distance

46.82 km

Distance

46.82 km

Wind Speed

15 knots

Wind direction

SSW ( 203)

Filter Rankings

Day Rank - speed

Avg

Nr		Rider	Avg
1		Michiel Steur	29.36
2		Wubbo Roelfsema	22.52

Day Rank - speed

Avg

		Rider	Avg	2 Sec	500m	Mile	Hour	Distance	Alpha
1		Michiel Steur	29.36	31.09	28.33	25.33	15.95	41.71	18.66
2		Wubbo Roelfsema	22.52	23.48	21.75	19.17	11.86	46.82	15.56

Wind Observation

10

31 Gust

18 Wind

203°

11

25 Gust

16 Wind

203°

12

25 Gust

14 Wind

203°

13

32 Gust

16 Wind

203°

14

24 Gust

15 Wind

203°

15

29 Gust

16 Wind

180°

16

22 Gust

15 Wind

180°

17

26 Gust

17 Wind

180°

Time	10	11	12	13	14	15	16	17
Direction
Wind	18	16	14	16	15	16	15	17
Gust	31	25	25	32	24	29	22	26
Degrees	203°	203°	203°	203°	203°	180°	180°	180°

Session Achievements

Achievement	Category	Speed Type	Speed	Rank
	BestAllTime	foil	22.52knots	#1