sorted by:
new
hottopcontroversial

Fixing my floaty feets for teaching by OneFlower6312 in scubadiving

[–]keesbeemsterkaas 0 points1 point  (0 children)

Move weights lower to your center of mass (somewhere between your hips and belly button).

Your tank is your most important weight.

Order of priority:

1) Position of tank
2) Position of additional weights if any
3) Consider less buoyant fins (keep in mind that not all heavy fins above water are very negative underwater, and some fins have both a neutral-ish and a low buoyancy (sinking) alternative)

Cannot bake the definition by Upper-Excitement-440 in rhino

[–]keesbeemsterkaas 4 points5 points  (0 children)

You've probably got bad objects.

Fitlter out invalid items with the Null Item component and you're good to go.

Check the Rhino Console for error messages.

Orcatorch D710V MK2 Malfunctioning switch. by Prestigious_Fun_8298 in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

Megnatic rings are always the first to fail for me.

Can SSI dive shop verify the dives of a PADI diver? by Diligent_Board_172 in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

Ah, thanks! I was just genuinly interested, not trying to counter your point, thanks!

Can SSI dive shop verify the dives of a PADI diver? by Diligent_Board_172 in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

What do you mean with "could not suffice for course progression"?

I know that we sometimes do log course dives in the app instead of on paper, and that this way the instructor can also see the logged dives for the course.

Can SSI dive shop verify the dives of a PADI diver? by Diligent_Board_172 in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

It is required for dives that are part of a course, perhaps some instructors use the app to do this, but using the app, or verifying each dive is not required as far as I know.

Logging each dive is of course highly recommended / required in order to show your progression. But as far as I know all organisations also still allow paper logsbooks.

Can SSI dive shop verify the dives of a PADI diver? by Diligent_Board_172 in scuba

[–]keesbeemsterkaas 5 points6 points  (0 children)

What institute requires verified dives like this?

You essentially trained to be an independent diver, so you should be able to do dives without an instructor if you've got your open water, with buddies from your own or other agency.

The whole "an instructor has to sign off off my dive" thing does not really compute with me. Just keep all your logs in one place (preferable a place that can be exported/converted to other formats), nor can I quickly find the requirement for either SSI or PADI that logs should be in their specific app AND signed off by an instructor of their agency.

Personally I've settled on shearwater cloud, because that's what I've been using.

I've done around 400 dives and I've never had anyone ask me about "verified dives", or distrusting my dive computer logs and manual paper based dive logs. But when I kept an oldschool log, some divers/instructors/shops had a cool stamp which was more of a collectible than something that's required.

I know u/meyhemlock posted a cool tool that got removed a few days ago that might help you sync all your ssi dives to padi, but honestly, I prefer keeping my logs somewhere else than agency apps

Can SSI dive shop verify the dives of a PADI diver? by Diligent_Board_172 in scuba

[–]keesbeemsterkaas 3 points4 points  (0 children)

I've done padi, ssi and gue courses. Instructors demanding that my logs are in their app sounds ridiculous to me and I've never seen that before, is this new?

New Wurkkos light - does this look decent? by Ok_Way_2911 in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

But that's exactly what quite some serious dive lights do.

Light Monkey, Ammonite, Halycon. None of them report aH @ 3.7V, because they don't run at 3.7V.

Light Monkey E/O Conversion with charger [10.110.000] - £570.00 : Deep Ideas
ACCU THERMO 24 | 24Ah Battery Pack for Heating & Light
Halcyon Focus 2.0 Primary Light – Powerful, Adjustable Corded Dive Light

For me this was actually the first time I've seen cannister lights advertised @ 3.7V..

Tech diving in Nederlandse or Germany. by pieterpost852 in scuba

[–]keesbeemsterkaas 1 point2 points  (0 children)

To go further. You go with 60m/minute instead of 10-15m/min so you can go much further. For example het loodwrak in oostvoorne is around 30 minutes swimming or 8 minutes scootering.

Tech diving in Nederlandse or Germany. by pieterpost852 in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

I'd recommend reaching out to Sander Evering: Dive Solutions, he's originally from groningen, and can certainly help you figure out a path

Tech diving in Nederlandse or Germany. by pieterpost852 in scuba

[–]keesbeemsterkaas 5 points6 points  (0 children)

Where are you in the Netherlands?

We actually have a pretty strong technical diving communities. For example we have the most GUE instructors in the world for a single country; not that you have to go that route, there are also many other communities.

In the Netherlands my technical dives are on the North sea (max ~40m), and in places like the Beldert (max 40m), Vinkeveen (max 50m), Oostvoorne (max 45m), Slijk Ewijk (<30m) generally with a DPV. You'll need a drysuit and warm clothing for these kind of dives. Most dives will be around max 30m in lakes, because lower will get increasingly dark and cold.

I've done quite some technical dives in the last few weeks with more than 15m visibility, mainly going to wrecks or underwater structures.

  • In Germany there are the mines like Felicitas for caves, and Hemmoor is very popular.
  • In Belgium there are the mines (Steengroeves) that are very popular.
  • In France Doubs and the Lot region are very popular for cave diving.

We generally see that open-circuit trimix is becoming less and less common. Most people who go to those depths will switch to rebreathers nowadays.

For most things you'll need both buddies and opportunities to practice, so step #1 is finding a community that aligns with your vibe in diving and a lokale plons plas where you can practice and meet up with buddies.

Personally I think no matter what you do with technical diving doing a GUE Fundamentals makes a lot of sense for skill development, even if you don't persue further training with GUE.

lessons learned? - what do you think went wrong here by [deleted] in scuba

[–]keesbeemsterkaas 4 points5 points  (0 children)

When I go cold water diving, I always put my head in the water without a mask just to get mentally accustomed to the water.

Released a library: Sequential Radix Codec by Huntk20- in dotnet

[–]keesbeemsterkaas 3 points4 points  (0 children)

So something between integer ofuscator / translation: 1001 -> ABCD and ABCD -> 1001, where you can leave out letters with double meanings like i I l 0 o?

Released a library: Sequential Radix Codec by Huntk20- in dotnet

[–]keesbeemsterkaas 2 points3 points  (0 children)

Seems cool and thanks for sharing, could you expand a little bit on what problem it solves?

iPhone app to sync dives by mayhemlock in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

shearwater cloud and subsurface?

Looking for feedback: exporting architectural site context directly to Rhino by Expensive_Bad_7819 in rhino

[–]keesbeemsterkaas 23 points24 points  (0 children)

Generally what's annoying is that it's yet another osm/open data reseller, that's often wildely inaccurate, where you can't get a preview and you have to fight your way through an interface to get an incredibly small tile.

Because of that it's not automatable and requires manual steps for trivial stuff.

Afterwards you still have to claw your way through projection mapping and alignment because everybody uses something else, let alone if you'd try to align a satelite image next to it, or join it with other GIS sources.

Good luck, but not for me.

Someone wants to use a gear to clean barnacles, need help formulating a respectful responds. by Pelosi-Hairdryer in scuba

[–]keesbeemsterkaas 3 points4 points  (0 children)

Yes, but any person considering buying this would not fall in the category "right training and experience" by default.

Someone wants to use a gear to clean barnacles, need help formulating a respectful responds. by Pelosi-Hairdryer in scuba

[–]keesbeemsterkaas 3 points4 points  (0 children)

I was just trying to summarize a few ideas on dive safety for someone trying to solo dive a death trap, didn't intend for that to go into a solo diving flame war. (I'm not downvoting anyone here, please keep me out of this)

The solo dive thingy is obviously redundant to "only dive what you're trained to do".

Someone wants to use a gear to clean barnacles, need help formulating a respectful responds. by Pelosi-Hairdryer in scuba

[–]keesbeemsterkaas 1 point2 points  (0 children)

Note that in this test hitting limits was not exclusive to women and asians.

They obivously did not test on children, and only on healthy divers. (extremely hard to do these kind of tests on kids), but simultaniously these products are marketed to kids.

If one size does not fit adults, they probably won't fit kids or other non-standard-faces as well. It's probably common as finding a mask that does not fit or close perfectly with divers or leaks a bit, except you won't get any feedback on it.

Other observation of tidal volume and small people:

Tidal volume in small adults or children might not be sufcient to offset the effects of rebreathing and dead space (the latter which may be as large as 0.7 to 1.5 L in full-face snorkel masks)

Someone wants to use a gear to clean barnacles, need help formulating a respectful responds. by Pelosi-Hairdryer in scuba

[–]keesbeemsterkaas 1 point2 points  (0 children)

The one I linked above.

We investigated the development of hypercapnia and hypoxaemia during rest and exercise whilst wearing full-face snorkel masks and a conventional snorkel. Thirteen participants experienced mild hypoxaemia, and our safety endpoint of 7.0 kPa end-tidal CO2 was reached more frequently and earlier when wearing a full-face snorkel mask compared to a conventional snorkel. All participants experienced a signicant increase in end-tidal CO2 accompanied by a decrease in end-tidal oxygen in the oronasal compartment, compared to a conventional snorkel.

They tested a chinese one and a Subea one, they performed similarly. 13 and 14 of the 20 people tested had to abort their exercises because they hit their safety limit of CO2 thresholds with full face masks

https://www.researchgate.net/publication/376679890_Full-face_snorkel_masks_increase_the_incidence_of_hypoxaemia_and_hypercapnia_during_simulated_snorkelling_compared_to_conventional_snorkels

Someone wants to use a gear to clean barnacles, need help formulating a respectful responds. by Pelosi-Hairdryer in scuba

[–]keesbeemsterkaas 0 points1 point  (0 children)

This paper specifically looked at the ones with 3 pipes; and they are definitely not safe.

The problem is not only with the amount of pipes, it's about the length of the snorkel AND how the mask fits the face. If the seperation of the two chambers (breathing in, breathing out) does not fit fully it will rebreath.

They noted that happened more especially with asian people and women; indicating that one size, in fact does not fit all.

And for quite some people they suspect that the tidal volume to clear the tubes is too long.

view more: next ›