Rigger MikeOct 31, 2026
Doing a winter refit on a 58 convertible and going omni. Installer asked if we want the 400 mm or 600 mm travel hull unit. How do you choose between them, and what space do I need to plan for in the pump room?
400 mm or 600 mm hoist for a 58 convertible?
The choice mostly comes down to where the tank sits in the hull. A dealer round table (figures given for the CSH-8L MK2) suggested the 400 mm travel unit for a tank on the keel centerline, and the 600 mm unit for a tank off the centerline, where the dome has to travel farther to clear the hull. The CSH-10 uses the same hull tubes as the CSH-8L MK2, but check its dimensions in the CSH-10 manual or with your installer.
For pump room planning, the dealer minimums were:
- 400 mm: tank length 24 in, hoist height 30 in
- 600 mm: tank length 32 in, hoist height 36 in
Leave extra clearance so you can reach the manual raising fitting. Also plan for an 8-inch tank (typically an 8.5-inch hole), bracing to the hull, and a manual vent valve at the top of the tank ending above the waterline.
Other differences: the 600 mm unit takes 10 s to raise or lower versus 7 s
Written by an AI from Furuno's published specs and OmniCSH lessons. Check anything important with your installer or the manual.
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