Categories
Lessons Learned sailing Sailing Upgrades Travel Lifestyle

Simple Guide for Calculating Your Sailboat’s Energy Budget

After spending way too much time figuring out how to size the power system for our boat, I thought it would be good to create a simple guide to estimating your needs. It is an excel file you can download/modify with your own sailing or RV needs. I ran through this math with our teardrop trailer, and now with the more complicated sailboat. This whole file is set up for a 12-volt system, you may need to make some modifications to this file for different voltages.

Start at the top of the document and fill out the yellow boxes. The file The results will show up at the bottom.

Think of your system as the combination of three different calculations:

  • Energy generation from solar, wind turbine, generator, and/or alternator
  • Energy storage to/from the battery bank
  • Energy draw to the system demands

Each system needs to be sized appropriately for your application, which starts with the demand you expect to have in your system. Start by listing all of the loads that will be on your system, and classify them in different ways: on anchor vs. on passage and define the minimum critical requirements. Then figure out how many amps and how many hours each draw will take on a given day – either on passage or at anchor. For example, we don’t need to run our autopilot while at anchor, and it’s one of the biggest amp draws we have on our boat.

Once you understand your overall system needs, you can play with sizing your solar panels and battery bank. This is the generation side of the equation. You want to make sure you’re accounting for usable sunlight, clouds, and a safety factor when making your assumptions. You also want to make sure you’ve got the ability to weather a few days of low (or zero) power generation. This all gets calculated at the bottom of the excel file where it shows the final calculations of how long you’d be able to last (theoretically) in each scenario, and what your excess/deficit would be.

On this calculation, we determined we would be at a deficit on passage and would be able to last 7.2 days. We could turn some systems off to conserve battery.

What do you think? I’d love to get some feedback on the file/calculations.

Categories
Travel Lifestyle

Step One: Purge your House

Something happened after we got back from spending almost three weeks in Northern Spain. It was the first time we got to travel for a longer period (more than ten days) since we both still work full time. It was also the first time we had somewhat of an itinerary but didn’t really have firm plans. We wanted to just spend time in the places we went to and see what we could find. Since we had more time, this trip was a lot less “go, go, go” trying to see as much as possible.

We have found that, when you take more time to travel, and not just take a week vacation, there is something that shifts in your way of thinking. We had all this time to just exist and to think about what it is that we wanted to do in life. A huge underlying theme with us is that we love to travel and we want to be able to do more of it. We will have more on what we are doing to transition from full-time jobs to a travel lifestyle in future posts. This post is focused on step one for us, which was (and still is!) getting rid of the things we don’t need – or as we have come to call it purging our house!

We have been living your typical American lifestyle which means having a big house with a lot of stuff. We asked the question “if we wanted to, could we move out in 3 months?” which provoked a lot of anxiety.  So as soon as we got back from Spain, we decided that step one was going through our house- room by room and purging all of the stuff we don’t need. We’ve sold a ton of stuff on Facebook Marketplace, and what we couldn’t sell was donated. We are working towards a modified form of minimalism in our house. We have come up with these general guidelines for ourselves when thinking of what we need/want and what we can get rid of:

1. The Three Month Rule

Have you used the item in the past three months? or are you going to use the item in the next three months? (for seasonal items, did you use last season? or are you going to use it next season? If the answer is no, get rid of it

2. Abandoned Hobbies

Do you have hobbies that you don’t spend time on anymore? You don’t have to keep everything, you can always get back into a hobby at a later date. If you are not spending time on it now, get rid of the items you have accumulated.
For example, Ryan used to play guitar and our house had at least 6 guitars he hadn’t played in years, we sold all except for one.
Another example: We make wine and cider at home and have accumulated a ton of equipment and bottles. Since we plan to travel more, we have sold some of our equipment and are recycling most of our bottles, keeping only enough to do 1 or 2 small batches of wine or cider a year if we want. These remaining items will have to be sold before we can travel full time.

3. The Happiness Test

You don’t have to go crazy minimalist. If something makes you happy, keep it. We aren’t the most sentimental people so we don’t have a problem getting rid of most things. But if you have something that is really important or special to you, you don’t have to get rid of it. General rule- if you need it OR if it makes you happy or is important to you, keep it!

4. Would it Move?

Ask yourself the following question: “If I were to move, would this item come with me?” This question can help you if you are struggling with your decision making 🙂

5. Eyes on the prize

Don’t fall back into old habits. Before you buy something, think about all the things we said above: do you really need it, will it really make you happy, if you move would it come with you.

6. Consumable Christmas

When it comes to the holidays, tell your family you want consumable items only so you don’t collect stuff. Last Christmas we did a liquor/wine gift exchange with our family. Other gifts included were mostly food items. This way people can still shop for you and feel that they are giving you a nice gift but it doesn’t have to be additional stuff – they don’t know what to buy you anyways! Another idea would be suggesting to your family that you could do a family trip or activity as the ‘gift’.

The other last but also really important thing with this is the money you can make! We promise- you don’t realize how much stuff you have that you don’t use and won’t miss after it is gone. AND these items can make you money which you can then save and put towards funding the lifestyle you really want! Small items that you are selling for under $20 all the way up to bigger/more expensive items you have- sell anything you can. We have a list of everything we have sold since we started purging our stuff. The grand total is up to over $11k! That did include two stand-up jet skis which sold for quite a bit each. But backing those items out we still have a total of $3k we have made by selling fairly common items that we just didn’t need to keep any longer.

Once you start to purge your unnecessary stuff it will become addicting! You will also feel much lighter and freer. You are giving yourself the freedom to focus your time and energy on what you really want.

What steps have you taken to allow more travel or more of what you want in your life? Leave us a comment below!