Session Details

Gerlof Hansma

Sunday 14 June 2026

Spot Lauwersmeer Netherlands

Board AV Modena Slalom 108, 2021

Sail Avanti Sails Machine M9 7.0, 2022

Fin Sonntag Fins SL-Pro 35

GPS Garmin fenix 8

Max 2 sec

35.3 kts

Rating

Average speed

33.38 kts (33.48 33.38 33.37 33.34 33.31)

100m

34.07 kts

250m

33.19 kts

500m

32.71 kts

½ hour

22.63 kts

Hour

22.2 kts

Duration

02:23:19

Naut. Mile

28.94 kts

Alpha

18.65 kts

Distance

92.78 km

Wind

15 knots

Gust

26 knots

Direction

W ( 270)

Filter Rankings

Day Rank - speed

#	Rider	Avg
1	Ivo Fellinger	34.10
2	Martin Koolma	33.69
3	Johan Bulthuis	33.49
4	Gerlof Hansma	33.38
5	Jasper Jongepier	32.91
6	Marc Roosendaal	32.60
7	Anne Fahner	32.25
8	Anne Evert van der Veen	31.83
9	Marcus Stevens	31.34
10	Frans Sijbrandij	31.21

Day Rank - speed

Avg

		Rider	Avg	2 Sec	500m	Mile	Hour	Distance	Alpha
1		Ivo Fellinger	34.10	35.55	33.53	27.39	18.89	110.83	14.50
2		Martin Koolma	33.69	34.60	31.97	26.04	19.04	106.00	21.89
3		Johan Bulthuis	33.49	35.25	32.15	27.12	21.54	124.88	20.30
4		Gerlof Hansma	33.38	35.30	32.71	28.94	22.20	92.78	18.65
5		Jasper Jongepier	32.91	34.94	31.51	27.98	19.26	127.94	23.32
6		Marc Roosendaal	32.60	34.03	31.12	25.38	16.35	56.62	14.57
7		Anne Fahner	32.25	33.52	32.20	26.45	14.66	27.16	0.00
8		Anne Evert van der Veen	31.83	33.17	30.54	25.46	15.82	53.50	21.30
9		Marcus Stevens	31.34	32.29	30.10	26.38	17.75	71.46	21.30
10		Frans Sijbrandij	31.21	33.18	30.90	24.83	18.86	43.44	20.78

Gear size range

Sail (m²)

6.5 avg 7.2 7.8

Board (W)

63 avg 105 138

Fin (cm)

32 avg 38 42

Wind Observation

🕐	6h	7h	8h	9h	10h	11h	12h	13h	14h	15h	16h	17h	18h	19h	20h	21h	22h
↗
kts	19	19	17	18	19	17	18	19	19	18	20	18	19	20	18	19	19
kts*	29	31	30	31	32	32	33	32	34	32	34	33	36	32	33	32	32
°C	15°	14°	14°	13°	14°	15°	15°	15°	15°	16°	15°	15°	14°	16°	15°	15°	15°

Time	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22
Direction
Wind	19	19	17	18	19	17	18	19	19	18	20	18	19	20	18	19	19
Gust	29	31	30	31	32	32	33	32	34	32	34	33	36	32	33	32	32
Degrees	293°	293°	293°	315°	315°	315°	315°	315°	315°	293°	315°	293°	293°	293°	293°	293°	293°

Session Achievements

Category	Speed Type	Speed
BestYear	24hour	50.10knots
BestYear	halfhour	22.63knots
BestYear	hour	22.20knots
BestYear	mile	28.94knots