It’s an early April weekend. The crocuses are sprouting, the sun warms your shoulders, and the air holds a hint of summer’s warmth. Confident that this boating season cannot possibly be as rainy as the last, you have made a trip to the marine supply store and pulled the deicer out of the water. Perhaps you’ve already contacted your trusted boat mechanic, and if you’re like me, you’ve run down an internet rabbit hole (again) looking for the best spring commissioning checklist. In short, it’s time for the spring launch. Hallelujah.   

spring commissioning
Getting any vessel ready to splash after months of sitting idle is no small task. Photo by Laura Carty

Getting any vessel ready to splash after months of sitting idle is no small task. But it’s joyful work, isn’t it? It means that we’re oh-so-close to those carefree days on the water that we’ve been dreaming about all winter. So, let’s get the job done and get out there. 

Whether you’re a DIY gal, or a guy who has his boat mechanic on speed dial, you’ll find these pages filled with good, solid advice for getting started. We also suggest you consult the excellent BoatU.S. spring commissioning checklists, one or two internet forums, and the pros at your local boating store. Finally, don’t discount those pearls of wisdom that roll off the tongues of your friendly marina mates.  

DIY or Hire a Pro?

If you haven’t determined whether to tackle the job on your own, ask yourself: Do I like mechanical tasks? Am I competent, or at least committed to getting up to speed? Am I willing to sit down and really read my systems’ manuals? Do I have an experienced boating friend who could lend a hand? 

Boating friends who do most of their own maintenance will likely be happy to provide technical advice, and usually these highly valued friends can also point you to the best sources for products. Bay boat owner Mitchell Hill, who has done most of his own work on the multiple boats he’s owned, says, “When you’ve done the work yourself for a number of years, you learn the best sources for the products you’ll need. For example, for zincs, I wouldn’t go anywhere but They have every kind of zinc, and they ship everywhere.”

Hill also recommends getting a second set of eyes on your completed work. “It’s good to listen to the opinions of others,” he says. “On opening day each year, our boating club offers free U.S. Coast Guard Auxiliary vessel safety checks, and even though I’ve been working on boats for years, I always have mine inspected. Maybe there’s a new regulation or law that I might not be aware of. In my opinion, there’s always something new to learn.”

Whether you do the work yourself or hire a pro, don’t rush and don’t cut costs. Fixing a mistake can be more expensive than doing the job right the first time around. Rob Sola and his team at Diversified Marine Services in Annapolis tell us, “The relatively low cost of a commissioning pales in comparison to repair bills that could have been avoided—not to mention boat down time during the summer season.” 

Sola adds, “It is very important for the boat owner to educate himself on all the boat’s systems. Read the manuals and talk to the pros about how to make sure your boat’s systems are working well and maintained properly. Smaller boats with fewer systems can usually be taken care of properly by an educated owner, but for larger boats with more complex systems, it’s typically better to have a pro look at it.” 

Service providers are already extremely busy, so if you decide to go with some professional help, contact your provider pronto to get in their queue.

spring commissioning
How’s your prop and underwater running gear looking? Foul release coating can help. Photo courtesy of PropSpeed/Oceanmax

Common DIY Mistakes

  • Failure to check and monitor all the important fluids, such as oil and coolant.
  • Failure to verify operation and condition of important systems, such as bilge pumps, battery charger, hoses below water line, and cooling systems.
  • Starting the engine or HVAC, without  realizing that most sea intake valves are closed if the boat is in the water, thereby not allowing any cooling raw water to flow the way it should.
  • Failure to check and clean sea strainers; some boats do not have a strainer, and the boat owner doesn’t even realize he really needs one.
  • Failure to check and replace anodes.Forgetting to install the plug before lowering the boat to the water!

How to select a pro for spring commissioning

If you decide you need help with the spring launch (hey, no judgment here), the experts at Diversified Marine Services offer the following advice for selecting a service provider:

Find a company with the skill set and experience to work on all of your boat’s systems. This will ensure all potential problems are found and issues can be addressed on the spot.

Look for good reviews and ask a dockmaster for recommendations. Dockmasters are notified every time any company does work within their marina, so they are often familiar with the companies’ reputations.

Keep shrink wrap out of the landfill

Most boaters want to do the right thing with old shrink wrap and get rid of it in an environmentally responsible way. But it’s hard, isn’t it? Who among us hasn’t balled up the big wad and stuck it in the trash, thinking all along that there has to be a better way? And even if you find a place that will recycle your huge hunk of plastic, they’ll insist that all zippers, doors, snaps, and straps be removed. But join Team PropTalk in fighting the good fight on this one. If you’re at a certified clean marina, chances are good that the staff will help make sure your wrap gets disposed of properly. The Marine Trades Association of Maryland, in partnership with the Maryland Clean Marina program and Chesapeake Materials, has launched a new shrink wrap recycling program

spring commissioning
MTAM has launched a new shrink wrap recycling program. Photo by Laura Carty

Seven Steps for a Successful Splash

1. Before the splash, or during a short-haul if you winter in the water, check: leaks, water inside, hoses and clamps, security of ports/hatches, batteries connected, tight stuffing box, seacocks, zincs, hull and bottom paint, and drain plug if appropriate.

2. Batteries and Engine: Change oil filter; check oil and transmission fluid levels and repair any leaks; visual inspection of belts, terminals, wiring; change fuel filter and inspect fuel tank and lines to include pumps and hoses, and joints. Do batteries hold a charge?

3. Safety Equipment: Run down the required equipment list, which includes a fire extinguisher, distress signals, and first aid equipment. Registration sticker up to date? Find detailed lists at: and

4. Navigation: Onboard and working: compass, navigation lights, marine radio, and chartplotter.

5. Hull and Prop: Check condition of each. Is a new coat of paint or a foul-release agent needed?

6. Trailer: Before you use it, inspect the hitch, safety chains, tires, bearings, lights, tie down straps, and brakes.

7. Shakedown Cruise: Run the engine, listen for unusual sounds, work off any moisture; bring a boating friend, so you can move around the vessel and check things.

Visit for a detailed checklist and helpful spring commissioning articles.

For suggestions on boat commissioning essentials, visit West Marine's "Complete the Project."