So many times, working on the boat means working in really tight places. There’s not much room to turn a wrench and not enough clearance for a socket.
That’s when Dave loves his ratcheting box wrenches. He got a set – or rather, two sets (metric and SAE) – several years before we bought Barefoot Gal and while they were handy living ashore, they’ve joined the ranks of “cherished tools” on the boat.
The big benefits:
- Can turn as little as 5 degrees at a time without having to remove and replace the wrench on the bolt or nut. That’s a huge benefit when you can’t see where you’re working! Just get it on once, then crank away – even if you don’t have much swing room, you can get it to turn.
- Even where you could use a traditional box wrench, the ratchet is much faster.
- The wrenches are much thinner than a socket and ratchet handle so you can get them in places with less clearance. A lot less clearance!
The ratcheting box wrenches will replace standard box wrenches, but admittedly won’t work for everything. You’ll still need a socket set with the extenders and universal joint that I wrote about here (to get to other “types” of hard to reach places) and open end wrenches for times when you can’t get a box or socket onto something.
Most tool companies make ratcheting box wrenches and almost any name brand will serve you well as long as it includes the sizes you need. Most boats will need a set starting at 1/4”; 3/4” at the upper end is good and is generally the largest in most sets. And yes, most boats need metric as well as SAE (inches) – it seems that almost every boat has some gear of each type.
You can get sets that have different sizes ratcheting boxes on both ends (called double box ratcheting wrenches) or on one end with the same size open-end wrench on the other. Dave likes the double ratcheting ones as we already own a set of open end wrenches, so he didn’t need more and, in his words, “it gives me twice the chance that I’m right in guessing what size the bolt is.” In other words, if you grab one wrench, you’ve got two sizes.
Dave’s (yes, I use them too, but for some reason all tools are “Dave’s” even though some are ones I had before I met him . . .) are GearWrench brand. One thing that is nice about the GearWrench brand as opposed to many others is that you just flip them over to go from “in” to “out” – there is no lever to flip and hence fewer parts and thus less chance of it breaking. They’re now about 7 years old and holding up well.
While he bought his when the local Sears was closing, you can get them on Amazon (shipping is free on most sets, even without Prime, so you don’t have to worry about the weight):
- GearWrench SAE double box ratcheting wrenches 5/16” to 3/4”
- GearWrench Metric double box ratcheting wrenches 8 to 19 mm
- GearWrench SAE/metric set with one end ratchet and other end same size open end – 1/4” to 3/4” SAE and 6 to 18mm (note: this set is significantly less expensive than buying SAE and metric separately but has the same size open and ratcheting box on the same wrench . . . not a deal killer and great if you don’t already have open-ended wrenches)
None of these sets come with cases. On our previous boat, Dave used tool rolls and now has snap-in wrench holders – red for metric, black for SAE. He likes the snap-in as being easy to just pull them out of his tool bag and take them all. Also, if you label the slots, it’s easy to see if you’ve missed putting a wrench away (and exactly what size is missing). Whatever you do, it’s a good idea to use different color cases or holders for SAE and metric – makes it much easier to quickly grab the right set!
GearWrench has also come out with a set of “FlexHead” ratcheting box wrenches where the head can sit at an angle to the handle. We do NOT have these so I can’t say how well they work from personal experience, but they look like a great idea! They are not inexpensive tools but could make a lot of jobs much easier. See them here – they get very good reviews but I’d love to hear from a reader who has used them.
- GearWrench FlexHead SAE set 13 wrenches 5/16” to 1”
- GearWrench FlexHead Metric set 12 wrenches 8 to 19 mm
- GearWrench FlexHead SAE and Metric combo (better deal if you want both)
NOTE: these sets do come with an organizer – and it’s different colors for SAE and metric!

Carolyn Shearlock has lived aboard full-time for 17 years, splitting her time between a Tayana 37 monohull and a Gemini 105 catamaran. She’s cruised over 14,000 miles, from Pacific Mexico and Central America to Florida and the Bahamas, gaining firsthand experience with the joys and challenges of life on the water.
Through The Boat Galley, Carolyn has helped thousands of people explore, prepare for, and enjoy life afloat. She shares her expertise as an instructor at Cruisers University, in leading boating publications, and through her bestselling book, The Boat Galley Cookbook. She is passionate about helping others embark on their liveaboard journey—making life on the water simpler, safer, and more enjoyable.
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Ritchard Findlay says
I LOVE my ratchet wrenches.
Dave Skolnick (S/V Auspicious) says
Flexhead ratcheting box end wrenches are the bomb.
Rosalind Franks says
I concur! We have a set of stubby ratcheting wrenches that have proved to be very useful
Anonymous says
love my gear-wrenches ….I was a mech. for many years and when they came out with these I was in heaven
Anonymous says
that and a well trained spider monkey will let me access all the tight places in my engine room!
The Boat Galley says
Small children who are mechanically apt are a treasure!
Dave Skolnick (S/V Auspicious) says
Since this article has come around I thought I’d hold forth on brands a bit. Money spent on tools is an investment. Many of us grew up with Sears Craftsmen tools and their sterling lifetime warranty. Today’s Craftsmen, now owned by Stanley Black and Decker, is not the same. Tool quality is down and the warranty can be very difficult to use.
There are lots of tool brands. Generally I care for my original Craftsmen tools and fill in as needed with Snap-On.
Don Anderson says
I agree totally. Love mine.
I store mine all clipped into a carabiner. While not as quick to get on or off, it does occupy a smaller footprint in my toolbag. And no popping out of the organizer. Another useful thing for me is keeping my most used tools in a light canvas bag that lives in the big toolbag. No digging for the same tool each time, and I can tell my helper to just grab the smaller canvas bag for me.
Dave Skolnick (S/V Auspicious) says
I am completely with Don Anderson. “Dave’s magic yellow bag” goes with me on delivery. Tools move from the big bag to the little bag. If they stay there long enough a replacement goes into the big bag so if something goes overboard or into the bilge there is a back-up. 10mm wrench and socket for example, and my crimper. Diagonal cutters. Screwdrivers.