La partenza del Doge Ferrigo alla 49° Barcolana 2017.

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1) Understanding your energy needs is essential to determine how much solar you need. Start by making an "energy budget". List all your consumers and their daily usage. For example, if your LED lights use 1W per bulb and you have eight bulbs on for 5 hours a day, that would be 8 Watts for 5 hours or (8x5) 40 Wh (Watt hours). I like to use kWh to keep things consistent. 40 Wh = 0.040 kWh. It's a good idea to list what you're using while at anchor and another list of what you're using while underway (for instance, you don't use your autopilot at anchor). Remember to list everything: fridge, freezer, watermaker, autopilot, nav lights, chart plotters, etc. For example, here aboard Athena, with an electric galley, fridge, freezer, watermaker, two computers, etc, we use an average of 5.5 kWh per day. 2) To give you a quick estimate, use https://globalsolaratlas.info/ to find "Global horizontal irradiation" per day for your location. Take your daily energy consumption from step 1 and divide that by the number of solar hours. In the case of Athena, located in the Caribbean, that would be 5.5kWh per day / 5 sun hours = 1.1 kW solar array. Keep in mind that this is a theoretical number that does not take into account the shading or degradation of the panels over time. Let's add 30%. 1.1 x 1.3 = 1.43 kW. You can now divide that number by the panel's Nominal Power output. In the case of Athena, our panels are 400W SunPower panels. 1430W / 400W = 3.6 panels needed to cover our 5.5 kWh per day consumption. 3) Understand that the amount of solar you can install on a small sailboat is limited by the size of the boat and heavily influenced by shading and, of course, the boat's location. The size of the panels might also be defined by the height of your stanchions or the size of an existing solar arch. Figure out where you're able and willing to install panels. That will dictate the size and number of panels. 4) Use Victron Energy's MPPT Calculator to calculate what MPPT is ideally sized for your solar panels and expected output based on location. Based on our experience in the Caribbean, the estimate provided by the guide is reasonable. https://www.victronenergy.com/mppt-calculator. Remember that it's best practice to avoid combining panels with different specs on the same MPPT. #sailboat #sailboatproject #boatwork #saillife #liveaboard #liveaboardlife #saltlife #sailing #sailingadventure #travel ingcouple #livingonaboat #solar #sailboatsolar

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Knot school on board www.yachtibis.com

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Watch the FULL EPISODE HERE: https://youtu.be/mNJQEAKbhR0 After soooo much research and planning, we're super excited to reveal our sail plan for Delos 2.0 🥳. We've been working closely with Quantum Sails http://quantumsails.com/svdelos to really hone in on our needs and preferences to come up with something that will give us performance, versatility, and durability to tackle all the conditions we plan to sail in. We've included a segment of a very in depth discussion we had with Quantum Sails, but if you'd like to see the full, uncut interview and get all the details, it's available to watch exclusively for our inner tribe on Patreon: http://patreon.com/svdelos. All the projects on the boat are full of their own unique set of challenges and rewards, but I have to say this has been one of my favorite big undertakings so far in the build! Meanwhile, we're still full steam ahead with the sail hardware, placing clutches and winches, and lots more trial and error. But we start welding things in place and you can reallllly see how the lines look with everything in place and it's so freaking cool!

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