A guided tour of the small diesel and saildrive combination found under the berths of most modern cruising catamarans — from the air it breathes to the folding prop at the bottom of the leg. Our worked example: the Volvo Penta D2-40 with 130S saildrive, as fitted to a Nautitech 40 Open.
Worked example: Volvo Penta D2-40 with 130S saildrive, as fitted (×2, one per hull) to the Nautitech 40 Open. Figures and service intervals follow Volvo Penta operator’s manual 7745857 — other engines and saildrives share this layout but differ in detail, so always defer to your own engine’s manual.