What Experienced Divers Do Before They Ever Get on the Boat
Paul Lenharr Sep 26, 2026
What Experienced Divers Do Before They Ever Get on the Boat
Some divers seem to arrive at the boat completely relaxed.
Their equipment is ready.
Their computer is charged.
Their camera works.
They know what they're wearing.
They know what gas they're diving.
Nothing important is sitting back in the hotel room.
Meanwhile, somebody else is digging through a gear bag asking:
"Does anyone have a spare battery?"
The difference isn't necessarily experience.
It's preparation.
Experienced divers eventually learn that one of the easiest ways to make diving more enjoyable is to solve as many problems as possible before dive day begins.
Because 7:00 AM on a moving dive boat is a terrible time to discover something you could have fixed the night before.
Preparation Reduces Task Loading
A lot happens before a dive.
Equipment needs to be assembled.
Cylinders need to be checked.
Exposure protection needs to go on.
Computers need to be configured.
Cameras need attention.
The briefing is happening.
Your buddy may be asking questions.
The crew may be preparing to enter the water.
None of these things is particularly difficult by itself.
The problem occurs when they all happen simultaneously.
Good preparation moves as many tasks as possible to an earlier time.
Instead of solving ten problems immediately before the dive, you may only have two.
That leaves more attention available for the things that actually require it.
Start With a Consistent Packing System
Experienced divers often develop a repeatable way to pack.
Not because there's only one correct system.
Because consistency makes omissions easier to notice.
Maybe your bag gets packed in roughly the order you'll need things.
Maybe you use smaller bags for specific categories.
Maybe you maintain a checklist.
Whatever system you choose, use it repeatedly.
A basic equipment check might include:
- BCD
- regulator
- dive computer
- mask
- fins
- boots
- exposure protection
- hood and gloves when appropriate
- weights or weight-system components when needed
- SMB and spool
- cutting device
- lights
- camera equipment
- certification cards or required documentation
The more complicated your diving becomes, the more valuable a checklist becomes.
Memory is good.
A checklist is better.
Don't Just Pack It—Inspect It
There's an important difference between confirming something is in the bag and confirming it's ready to use.
Pick up the mask.
How does the skirt look?
Check the strap.
Look at your fins and straps.
Inspect clips and attachment points.
Look over the BCD.
Check the inflator connection.
Examine regulator hoses for anything unusual.
Confirm the mouthpieces are secure.
You don't need to perform a complete equipment-service inspection every time you dive.
You're simply looking for something obvious that could turn into a problem tomorrow.
It takes minutes.
Charge Everything Early
Modern diving has become remarkably dependent on batteries.
Dive computers.
Transmitters.
Primary lights.
Backup lights.
Cameras.
Strobes.
Video lights.
Action cameras.
Phones.
Maybe an underwater scooter.
And inevitably, they all seem to need charging at the same time.
Don't wait until bedtime to discover you have seven devices and three chargers.
Start early.
Then actually confirm they're charging.
A cable plugged into a device isn't proof that electrons are going anywhere.
Before you walk away, look for the charging indicator.
A Charged Computer Still Needs to Be Checked
Battery level is only one part of computer preparation.
Before diving, verify the settings relevant to the dive you're planning.
That can include:
- gas selection
- Nitrox percentage
- transmitter pairing
- display configuration
- alarms
- units
- user-adjustable conservatism settings
- compass operation
If you're diving Nitrox, the computer should be configured for the gas you're actually using.
Don't rely on what you remember setting yesterday.
Verify it.
Analyze Your Gas
If you're using a breathing gas other than air, analyze it according to your training and the procedures of the operation you're diving with.
Know what's in the cylinder.
Confirm the cylinder you're analyzing is the cylinder you're actually going to dive.
Mark or document it according to the procedures you're following.
Then make sure your computer settings agree with the gas you've analyzed.
It's a simple process.
It also prevents a very avoidable category of problems.
Cameras Deserve Their Own Checklist
Underwater photographers eventually learn this lesson the expensive way.
A camera can appear completely ready while one tiny detail ruins the entire dive.
Battery charged?
Memory card installed?
Enough storage space?
Correct lens?
O-ring inspected?
Housing properly closed?
Vacuum system confirmed, if equipped?
Strobes charged?
Fiber-optic or sync connections correct?
Focus light charged?
Camera actually turned on?
Settings somewhere reasonable?
Nothing hurts quite like descending onto an incredible reef and discovering the memory card is sitting in your laptop.
Ask any underwater photographer how they learned that lesson.
Prepare a Save-a-Dive Kit
You don't need to bring an entire dive shop with you.
But a thoughtfully assembled save-a-dive kit can rescue a dive day.
The contents depend on your equipment and what type of diving you're doing, but common items might include:
- appropriate spare O-rings
- mask strap or replacement strap
- fin strap or compatible replacement
- mouthpiece and appropriate securing method
- batteries your equipment actually uses
- small tools appropriate for your gear
- spare bolt snaps or clips
- defog
- replacement camera-related items if you're carrying a camera
The important part isn't carrying every possible spare.
It's carrying the small things that are both likely enough to fail and practical enough to replace on site.
And know what you're qualified and comfortable repairing.
A dive boat isn't the place to improvise major life-support equipment repairs.
Know What the Conditions Are Supposed to Be
Equipment preparation is only part of dive preparation.
Check the expected environment.
Water temperature.
Surface temperature.
Wind.
Current when relevant.
Visibility reports when available.
Entry conditions.
The purpose isn't to obsess over forecasts.
It's to make intelligent equipment decisions.
That extra layer you almost left home suddenly looks pretty good when the water is ten degrees colder than you assumed.
Decide on Exposure Protection Before Morning
Standing in front of an open suitcase five minutes before departure is not the ideal time to debate wetsuit thickness.
Look at the conditions ahead of time.
Think about your personal cold tolerance.
Remember that repetitive dives can change how comfortable you feel later in the day.
Being slightly warm on the surface is usually easier to solve than being miserably cold 40 minutes into a dive.
Prepare for the Surface Interval Too
Dive preparation often focuses exclusively on what happens underwater.
Don't forget everything between dives.
Depending on the trip, consider:
- water
- appropriate food or snacks
- sun protection
- hat
- sunglasses
- dry clothing
- wind protection
- towel
- seasickness strategy when appropriate
A diver who is cold, hungry, sunburned, dehydrated, or miserable during the surface interval isn't setting themselves up particularly well for dive two.
Hydration Starts Before the Boat
Trying to fix poor hydration by drinking an enormous bottle of water immediately before boarding isn't a great strategy.
Hydration is something to think about throughout the preceding day and morning.
Travel can make this especially relevant.
Long flights, changes in routine, warm destinations, physical activity, and simply forgetting to drink can all contribute.
Build hydration into the trip rather than trying to catch up immediately before the dive.
Sleep Is Dive Preparation
This one isn't sold in a dive shop, so it doesn't receive much attention.
But sleep matters.
If tomorrow is a full day of diving, tonight probably isn't the ideal time to stay awake until 2:00 AM reorganizing camera equipment.
Prepare earlier.
Pack earlier.
Charge earlier.
Then sleep.
The objective isn't perfection.
It's arriving at the dive mentally present rather than already exhausted.
Know Tomorrow's Plan
You don't need every detail before the briefing.
But basic information helps.
What time are you leaving?
Boat or shore?
How many dives?
What type of sites are expected?
Approximate depths?
Nitrox available?
How long is the boat ride?
Will you return between dives?
Is lunch aboard?
Does your gear stay assembled?
Are there special procedures for cameras?
Knowing the answers affects how you pack and prepare.
Put Everything You Need in One Place
Here's an incredibly sophisticated technique:
Put the things you're taking tomorrow together tonight.
It sounds ridiculous until you've spent 20 minutes looking for one boot.
Gather your equipment.
Gather your clothes.
Put your computer where you'll remember it after charging.
Put your camera somewhere safe.
Put the save-a-dive kit with the gear.
Put the small things that normally get forgotten somewhere obvious.
Morning should primarily involve picking things up, not finding them.
Do a Mental Dive Before the Actual Dive
This doesn't need to become elaborate visualization.
Simply walk through the sequence.
I'll arrive.
Set up my cylinder.
Check my gas.
Assemble my equipment.
Gear up.
Do the buddy check.
Enter.
Confirm everything is okay.
Descend.
That mental walkthrough can reveal surprisingly simple omissions.
"Wait. Where did I pack my hood?"
Better question tonight than tomorrow.
Preparation Shouldn't Become Anxiety
There's a balance here.
The goal isn't to create a three-hour ritual before every 40-foot reef dive.
Preparation should make diving simpler, not more stressful.
As your system improves, it often gets faster.
Your checklist becomes familiar.
Your equipment has a home.
Your charging routine becomes automatic.
Your save-a-dive kit stays packed.
Eventually preparation becomes almost boring.
That's good.
The Calm Diver Usually Started Yesterday
When you see someone sitting comfortably on the boat while everyone else is scrambling, there's a good chance their dive started long before the boat left the dock.
They packed yesterday.
They charged yesterday.
They checked the equipment yesterday.
They thought about exposure protection yesterday.
They found the missing fin strap yesterday.
So this morning?
They can listen to the briefing.
Talk to their buddy.
Look at the water.
And enjoy the fact that they're about to go diving.
The Bottom Line
Good dive preparation isn't about being obsessive.
It's about eliminating preventable problems.
Pack consistently.
Inspect your equipment.
Charge your electronics.
Check your computer.
Analyze your gas when appropriate.
Prepare your camera.
Carry useful spares.
Check the conditions.
Hydrate.
Get some sleep.
And know enough about tomorrow's diving to arrive ready.
Because the best time to fix a problem at 7:00 AM on the dive boat...
is usually 7:00 PM the night before.