Hynautic Selection

Call toll free - (877) 379-2248

System Selection

How to Spec a System:
1. From the application guide select components appropriate for the vessel based on:
a) hull type — displacement or planing;
b) length of vessel; and
c) number of steering wheel turns desired.

2. Select the fitting and hose kits required, based on type of plumbing (1/2” or 5/8” tubing or hose) and based on number of steering stations.

3. Confirm that there is sufficient space available in the dash and engine compartment(s) for the steering components. See helm and cylinder dimensions at the end of this section.

LOA	Helm Unit	Helm Turns	Cylinder	Tube Diameter - Under 40" to Helm	Tube Diameter - Over 40' to Helm	Max HP	Max Area
Planing Hulls
35-50' (11-15m)	H-21 or H-25	5	HC5350 or HC5356	1/2”	5/8”	450	—
40-50' (10-18m)	H-21 or H-25	6.8	HC5351 or HC5357	1/2”	5/8”	750	—
40-50' (10-18m)	H-42	4.7	HC5351 or HC5357	1/2”	5/8”	750	—
45-60' (14-18m)	H-42	7.4	HC5378 or HC5379	1/2”	5/8”	950	—
45-60' (14-18m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	950	—
55-65' (17-20m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	1200	—
to 70' (to 21m)	H-41	10.8	2x HC5378 or HC5379	1/2”	5/8”	1500	—
to 70' (to 21m)	H-41	14.2	2x K-8	1/2”	5/8”	1500	—

Displacement Hulls - Tug Boats and Net Haulers
to 30' (6-9m)	H-21 or H-25	5	HC5350 or HC5356	1/2”	5/8”	200	—
30-35' (6-11m)	H-21 or H-25	6.8	HC5351 or HC5357	1/2”	5/8”	250	—
30-35' (6-11m)	H-42	4.7	HC5351 or HC5357	1/2”	5/8”	250	—
26-40' (8-12m)	H-42	7.4	HC5378 or HC5379	1/2”	5/8”	400	—
26-40' (8-12m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	400	—
30-45' (9-14m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	450	—
to 50' (to 15m)	H-41	10.8	2x HC5378 or HC5379	1/2”	5/8”	500	—
to 50' (to 15m)	H-41	14.2	2x K-8	1/2”	5/8”	500	—
to 50' (to 15m)	H-41	20	2x K-9	1/2”	5/8”	500	—
Displacement Hulls - Work & Pleasure Boats
to 40' (9-12m)	H-21 or H-25	5	HC5350 or HC5356	1/2”	5/8”	300	—
40-45' (12-14m)	H-21 or H-25	6.8	HC5351 or HC5357	1/2”	5/8”	350	—
40-45' (12-14m)	H-42	4.7	HC5351 or HC5357	1/2”	5/8”	350	—
40-55' (12-17m)	H-42	7.4	HC5378 or HC5379	1/2”	5/8”	500	—
40-55' (12-17m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	500	—
45-65' (14-20m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	650	—
to 75' (to 23m)	H-41	10.8	2x HC5378 or HC5379	1/2”	5/8”	750	—
to 75' (to 23m)	H-41	14.2	2x K-8	1/2”	5/8”	750	—
Sailboats - Skeg Rudder
to 40' (9-12m)	H-21 or H-25	5	HC5350 or HC5356	1/2”	5/8”	—	9 (.9)
40-45' (12-14m)	H-21 or H-25	6.8	HC5351 or HC5357	1/2”	5/8”	—	10 (1)
40-45' (12-14m)	H-42	4.7	HC5351 or HC5357	1/2”	5/8”	—	10 (1)
40-52' (12-16m)	H-42	7.4	HC5378 or HC5379	1/2”	5/8”	—	17 (1.6)
40-52' (12-16m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	—	17 (1.6)
50-60' (15-18m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	—	18 (1.7)
to 65' (to 20m)	H-41	10.8	2x HC5378 or HC5379	1/2”	5/8”	—	20 (1.9)
to 65' (to 20m)	H-41	14.2	2x K-8	1/2”	5/8”	—	20 (1.9)
Sailboats - Spade Rudder
to 40' (9-12m)	H-21 or H-25	5	HC5350 or HC5356	1/2”	5/8”	—	7 (.6)
40-45' (12-14m)	H-21 or H-25	6.8	HC5351 or HC5357	1/2”	5/8”	—	8 (.7)
40-45' (12-14m)	H-42	4.7	HC5351 or HC5357	1/2”	5/8”	—	8 (.7)
35-46' (11-16m)	H-42	7.4	HC5378 or HC5379	1/2”	5/8”	—	15 (1.4)
35-46' (11-16m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	—	15 (1.4)
40-50' (12-15m)	H-41	5.4	HC5378 or HC5379	1/2”	5/8”	—	15.5 (1.4)
to 60' (to 18m)	H-41	10.8	2x HC5378 or HC5379	1/2”	5/8”	—	16.5 (1.5)
to 60' (to 18m)	H-41	14.2	2x K-8	1/2”	5/8”	—	16.5 (1.5)

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