Inside the teak- clad forward deckhouse is a contemporary saloonwith lots of finely crafted wooden details


Perseverance isworking as a charter yacht and nearly always anchored ormoored overnight. For ocean passages, there are guest cabins next to the keel trunkwhere the boat’smotion isminimal. The quality of finish


throughout the yacht is a showcase of Baltic Yachts’ skills. ‘The combination of light stained brushed oakwith allwood grain oriented vertically, including all cornices, marryingwith the dark-stainedmaple floor edges is a stunning look,’ Johansson says. ‘Every singlemetal piece in the interior has a PVDcoating or


‘There has been a huge amount of


development since we installed our first hybrid systemon Canova in 2019,’ Hawkins says. ‘The biggest difference between then and now is battery technology.’ It’s still far fromoff-the-shelf technology, though, and a hybrid setup with an extended battery capacity for silent running provides a challenge for the notoriously tight engine roomspaces found on sailing yachts. ‘With high-voltage electrical systems


it’s crucial to find the right equipment and partners,’ Hawkins says. ‘You can’t


Steps lead down fromthe upper saloon into the lower one


colour tomatch. It’s hard to believe all interior parts are fittedwith fastmounts when looking in the joints and the lineup of different parts. Every single part can be disassembled to access the systems behind.’


just go out and buy a set of class- approved batteries for a setup like the one we developed for Perseverance.We had to find a suitable supplier and then help themget class approval. That’s a


The best thing about it,


though, is the absence of noise. ‘It’s a floating interior on rubber-mounted carbon fibre beams,’ Johansson says. ‘Creating a silent boat was one of ourmain goals.’ Taylor concurs: ‘This boat is super quiet evenwith the generators running,with noise levels usually less than 42dB. That’s partly due to the quality of the


sound insulation but also the science and past development that Baltic has put into noise reduction over the years. Even the hydraulic lines are double insulated. You can’t hear any noise at all in themaster cabin.’


”Perseverance can run in silentmode for up to nine hourswith everything running atmaximumcapacity”


typical challenge we face.’ Halfway through this process they had to switch battery suppliers, so the engine room had to be reconfigured to fit a different set of equipment. The hybrid drive is designed to


regenerate electricity froma boatspeed


of 10kts. ‘At lower speeds the advantage of starting to regenerate are lower because you also reduce the boatspeed a lot,’Wassen says. ‘When the wetted surface is still the largest component of the resistance, then the effect on boatspeed when you start regenerating is really large. The resistance


curve is not linear, it goes up by the fourth power or so.When you’re at a higher point of the resistance curve, the effect on boatspeed is a lot less.’ In practice, the regeneration is


working well. ‘We’ve been getting about 8-12kWout of it under sail,’ Taylor


SEAHORSE 81


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