Archive for the ‘Dive Log’ Category

Class Photos, Fall 2010

Wednesday, December 15th, 2010
Shooting a bag while maintaining buoyancy

Shooting a bag while maintaining buoyancy

This fall in the Northeast was a bad season for blowouts and poor visibility.  Several hurricanes passed by, stirring up the surf.  Often, this can help the conditions by mixing the surface water with the cooler water below the thermocline.  Unfortunately this fall it cleared out the plankton on the surface, then just stirred up the bottom into soup.  At this point, the surface had over 50 ft of visibility, but the bottom would drop to less than 5.  That’s on the days we could make it out.

On the plus side, this gave me the opportunity to drag some students up to Dutch and finish up classes.  Once most of the drills are done, I dragged the camera along to grab a few shots.   After this fall, I needed the practice or I’d forget how to work the housing.  Also, I’m playing with a new lenses/port combination that takes some getting use to.  For what it’s worth, here are some of the photos that came out well.

Notes on Diver Etiquette

Monday, November 15th, 2010

The other day, I found myself in a discussion with a group of instructors and experienced divers over the issue of diver etiquette.  Everyone agreed that this varies wildly from diver to diver, and shop to shop.  While there is no explicit place for this discussion in the training curriculum, it is a subject that should be brought up.   We all agreed the best time to teach this is as part of the Open Water class (teach good habits before divers learn bad ones).  Many of us do include a few minutes to discuss this in class, then try to reinforce the concept during the open water dives.

Unfortunately, there are other instructors that do not understand the need, do not have the time, or just have bad etiquette themselves.

Ultimately, a diver’s etiquette will reflect their own personality.   A diver that only thinks of them self, will never follow good etiquette.   Someone that is considerate of others will try their best to be considerate while diving.  However, many of the latter do not know how to do this as new divers.  Here are some points to consider.

  1. On the surface:
    In many dive locations, gear space is limited.  This is especially true on dive boats.  Being conscience of this and trying to minimize the space we use is good etiquette.  Here are some points to consider on a dive boat.  These points also apply to other dive sites, but boats are usually the most space limited.

    • Gear boxes and bags. Try to keep gear containers no larger than necessary.   Try to bring containers that fit neatly under benches.  Divers showing up to a boat with over sized bags or too many bags are being inconsiderate of others, and will often get glares or rebuke from the crew. I recommend three containers:
      1. One for the BC and dry / wet suit
      2. A small one for dry gear.  A backpack works for me  (phone, towel, snacks, a few spare parts …),
      3. A small crate (about the size of a milk crate) for misc Scuba gear (reel, lift bags, lights… with fins on top)
    • This configuration works well in most environments of the North East.  On a boat, the crate  should fit well under the bench where you are setting up your tanks.  The drysuit goes in a dry location until needed.  The backpack is always in a dry location.
    • Put gear away promptly. Once your gear is loaded, set up your tank and stow your gear neatly out of the way.  The same is true after a dive.   As you take your gear off put it back into your crate and stow it neatly out of the way.  Not only is this good etiquette, but it can prevent gear damage or loss on a busy deck.
    • Dive Planning: Keep in mind that your not the only one on the boat. I recall several occasions where the entire boat was waiting over half and hour for one customer to finish his dive. If you plan on doing longer dives, then try to get into the water quickly.
    • Clean up after yourself: It’s amazing to see how much debris is left after the divers remove their gear from a dive boat. Half empty water bottles, cans, partially eaten bags of food … Yes, the crew will clean the boat, but all of this is in everyone’s way during the trip too.
  2. Gearing Up This is a process that takes up both space, and time. Here are some items to consider when working to don our gear in limited space.
    • Timing: If you know that you take longer than others to gear up, then either start gearing up early, or wait for others to go first.
    • Lend a hand: If you decide to wait for the diver next to you, then give them a hand.  That way they are out of your way quicker.
    • Be self sufficient:  This takes some time to learn, and practice. Most boat crews are eager to help in any way they can. However, there are often a lot of divers gearing up at once. Before strapping on tanks, prep the gear so that it is in reach as you don your kit. Watch an experienced crewmen.  Most can gear up with no assistance.   Again, it’s not that assistance is unavailable, but if you need lots of help, then you’re preventing other divers from getting any.
  3. Underwater: This can be difficult, since it’s not easy to know where other divers are in relation to yourself.  However, here are a few items to keep in mind.
    • Look around you. There may be other divers near you that you’re not expecting.   This is especially true on or near the up-line.  Be careful of your finning when you know other divers are near.  Fin slowly until you know your not going to kick a fellow divers.
    • Steer clear of classes. If you see an instructor working with a class, try to keep a reasonable distance.  Otherwise, you may confuse and distract the students from following their instruction.   Also, additional divers in close proximity makes it difficult for the instructor trying to keep watch over his students.
    • Photo ops: This is more of an issue in warm water diving, but keep in mind that other divers may want to take a picture also.  I’ve had video footage ruined by a diver sticking his fin in view while recording.  On the other hand, I try not to take too long, and let the next photographer get a chance.
    • Reels: Keep your line reel low and secure.  On several dives, the wreck looked like spider web with lines draped here and there.  Near the up-line it’s important to tie your reel low and put wraps close to the wreck.  A line 10 ft off the wreck can become an entanglement hazard as it is out of an approaching divers view.  When passing across another line, pass your line underneath.   Assuming your on your way out, the other diver should be on his way back before you, and will not be delayed by your line.

Conclusion:

Again, many of these points apply anywhere, not just to dive boats.  Any time space is limited, we need to work to make maximum use of it.

These were some of the points our group discussed.  Let me know if you have others.

Fall in Mexico

Saturday, October 16th, 2010
Swimming through pillars of coral

Swimming through pillars of coral

After missing out on vacation last year, Val and I decided to head south for some warm sun and diving.

We did not realize just how low the low season is there.  Apparently September and October are quiet down in Mexico.  We felt like we had the inflatable park resort to our selves.   Not that was a bad thing!

There were a few other divers, but even the boats were mostly empty.  This gave the resort staff time to work on a few projects, which they did very quietly.  On the other hand, everyone also received personal attention from the outgoing staff.

There have been a few changes since our last visit several years ago.  Damage from the hurricanes that struck the Yucatan is still evident, but there is also a lot of new construction.  The food was great as usual, and yes, I will be dieting for the next few months.

Before we arrived, we heard rumors that the weather had been windy the day before, and boat diving may still be suspended.  While true, this gave us the afternoon to unpack and unwind from the trip.   The next morning Val had the beach to herself, and I boarded the boat with a group of fellow photo enthusiasts.

Jumping into 85 degree water was a bit of a shock.  For me it was too warm.  I’ve never been in water above 80, and am not used to it.   I should have brought my shorty or 1 mil.  However, this temperature the fish were active.  We saw a lot of sharks, turtles, and rays along with schools of other fish.

After a few days, we made a number of new friends, and were able to hook up on dives, and meals.   We discussed travel destinations and dive history.   Places to go and things to see.     Underwater, we kept an eye out for each other, and provided models where needed.

I also had the opportunity to catch up some old friends that still worked in the area.  It was interesting to hear details of the storm damage over the years, as well as the changes to the Island.   The last time I was here, Nitrox was in limited supply.  Now Tech diving and gear / supplies are  available locally.   This would make a great place for Tech checkouts.  The dive sites are just a few hundred feet from shore. The water is warm and clear, and there is lots to see during deco.
Hurricane Paula threatened to head our way, so many of the resorts transported guests to more robust locations.  We felt like refugees walking through town in large groups.  We made it back the next day, just in time to pack for the trip home.   Oh well, one day of lost diving.

Count the Counter lungs

Tuesday, October 12th, 2010

A friend just asked an interesting question:  Why have two counter lungs vs one?

I must admit, that no one ever told me an answer to this question, but here is my reasoning for 2 vs 1:
One counter lung only lets the scrubber work during half of the breathing cycle.
If the lung is on the exhale side, then it inflates on exhale, but gas only passes through the scrubber on inhale.
If it’s on the inhale side, then gas passes through the scrubber only on the exhale.

If you have two counter lungs, half the gas passes through the scrubber as you exhale, and half passes through as you inhale. This makes the gas pass inflatable Canada through the scrubber slower, (aka dwell time)  and therefore the scrubber is more effective.  I would also assume that the slower gas movement would decrease the work of breathing of the unit.

Good to get wet

Monday, September 13th, 2010
Mooring Bits

Mooring Bits

After a few students backed out on my Saturday dive, I reviewing the weather forecast,  and checked with Roger to see if there was any room.  As it turned out, they needed crew for a student dive.  Life is good.   My gear was already prepped and packed, just set the alarm.

The morning was calm with some light clouds. The boat was quickly packed, and we were headed out in nearly flat seas.  Given a group of open water students, bouncy castle the destination was for an inshore wreck in less than 60 ft of water.  In my mind, that means more bottom time, and perhaps fluke.

On the way out, I found out that only half of the group was in Open Water, and the rest were newly certified divers getting in some more practice.   This became evident by the number of question about my KISS Rebreather.  Not wanting to take attention away from an instructor with a class, I tried to be polite, but kept the answers short.

We were quickly at our destination and Chris jumped in as I threw the hook.  Within minutes he had us tied in, and we started getting everyone geared up.   The students went in last as the other divers went in armed for some of the Tog this wreck is know for.   By the time they were in, Chris was up with a vis report.  Not good.

I tried to keep a positive attitude, and rolled in with the camera.    The surface was a little cloudy, but the bottom was downright dark.  Vis on the bottom was 5-10 at best.  I’m not familiar with this wreck, so out came the reel.   I left the gun topside as light, camera, reel, and gun just seems like a bad combination.  Of course, I immediately ran into some nice Tog on top of the wreck, and a fair size fluke as soon as I hit the sand.

The wreck was mostly intact with some areas where you could penetrate.  A quick inspection for lobster came up blank.   The camera was just about useless.   Some part of me was tempted to go back up and exchange it for my spear.   Instead, I fell back to my age old plan of just looking around when on a wreck for the first time.  Even in the tight vis, there was lots to see.  In addition, it’s good to just practice using the camera controls and playing with different settings.  It was good to get wet without students of my own to watch.

After a complete loop around, I doubled back.  I could hear some of the divers starting their second dive, so I headed back to the boat.   We got the class back in the water, and Chris prepared to pull the hook.  Once everyone was aboard, we were quickly free, and on our way home.

Back at the dock we set to work cleaning fish and the boat.  The new divers were obviously excited about the dives, and asking when they could go again.  I only wish I could have gotten some pictures for them to remember the day by.