Search results

Oh wow, that does look pretty. Not how I remember it. And I even went through the trouble of going to Menjangan, which is a protected marine park. And yes, I did Crystal Bay (no mola mola in November - learned the hard way) and the manta dive on Nusa Penida (it was OK, a bit green). Maybe I was...

I’ve been to Komodo 2x (Mermaid II 2013, Adelaar 2019), Raja Ampat 2x (Mermaid I 2017, Damai I 2019), Bangka island 2014, Bali 2018. Raja Ampat is really in a league of its own, from the marine life variety, big and small, to topside scenery. Komodo is a close second, but the emphasis is a bit...

Wow, thank you all for the very insightful responses! Lot's to work on :) Mostly to shoot RAW. Unfortunately, I'm still in Lightroom 5, so don't have the range-masking capability :mad:

Hello! How do people deal with color banding issues on the blue water areas? I understand it's a common problem on shots with skies, and for us, divers, shots with blue water. The two solutions I saw so far involve layers in Photoshop (which I don't have), and the other is to add grain in...

Wanting to buy my first drysuit. I'm a female, 5'3" 130 lb. I've been told I have longer legs/shorter torso for my height, but not sure if such precision matters. Shoe size 7.5-8 (street shoes). I think I prefer Trilam over neoprene, but open to both. Would like to get as many accessories with...

Hi scuba friends, I'm tentatively going to Tokyo with a friend over Thanksgiving this year and would like to make a longer trip out of it with some diving (with 1-2 weeks set aside for diving and going solo for this part). The question is whether it's worth spending some time in Okinawa or...

Thanks for your advice to see a doctor... I obviously know about this option without Scuba board (the problem is that doctors don't know much about this stuff since it's so specialized). I wrote here specifically to find out how long it took other people for the stings to heal, and if they...

Hi everyone, I'm curious about others' experiences with fire coral stings. I was diving in the Red Sea in September 2015, and got stung by a fire coral on the back of my hand (by a terrible accident, of course). The rash had started to heal a few weeks after the incident and the itch went away...

OK, but for the purpose of solving this textbook problem - what formulas do I need, and what assumptions should I make? I think we all agreed that the object has negative 86 lb buoyancy. This makes me think answer choices #2 and #3 might be correct. Is #2 better than #3 because it involves fewer...

The point of a take home exam is to test if you've already learned the information, and if you haven't learned some of it then to learn it. If the point was to just test if you've already learned the information then the exam would be administered in class. I started this thread because neither...

Applying information I've received when I need it! No kidding! The book doesn't mention lift lines a single time. Nor does it define the total crushing force. Or a single word about using lift bags (which I'm trying to get clarifications on in a separate thread). And if it is mentioned...

OK, got it! Thank you so much for the clarification!

So that means the total surface is 600 sq.in, and the total pressure is 14,160 lb? That still doesn't sound right. Are there different pressures acting on different sides?

Thanks! Do you mind telling how you did the calculations? I calculated the absolute pressure at 20' = .445 psi * 20 ft + 14.7 psi = 23.6 psi. But how do you apply this to the container? Based on my understanding I would have multiplied 23.6 psi by 100 sq.in of the top surface of the container...

So which answer would you pick? How much margin do I need to add for line safety? Are there specific regulations on this? ---------- Post added August 14th, 2014 at 05:48 PM ---------- If the book explained how to solve them, then I would have obviously solved them myself. The book doesn't...

And what does this mean in practical terms for the problem at hand?

Since it looks like we have some people on here that like to solve physics problems I'm going to put two more out that I'm not sure about: 1. An object is five ft. square and five ft. high is floating in the ocean. Six inches of the object is above the waterline. What is the minimum line...

Thank you all for the quick replies! Yes, I did get to the point that I have negative 84 lb buoyancy, and in theory that's how much lift power I need to counteract it, except for the buried in sediment part... who knows how much suction the sediment has! And how should I apply the depth...

Does anyone know how to work out this problem? An object with a volume of one cu. ft., weighing 150 lbs. is embedded in the sediment at a depth of 99 ft. in the ocean harbor. This object is best lifted to the surface by: 1) a line tied to a boat at the surface 2) Two 75-lb. lift bags...

Hey everyone, I'm still looking for help with identifying these marine creatures. I'm looking for the popular and scientific name, if possible. Any help appreciated! Thanks!