It is rare to have a diving film. I will not talk about the shooting techniques and plot, but only talk about this film from the perspective of diving.
First of all, the heroine - the trapped sister, who repaired the bottom thruster at the beginning, explained the background, was a commercial diver, worked in icy waters for a long time, and used dry clothes for a long time. During the maintenance process, they directly drilled through the iron net, and the art masters were bold and could not help but slander in their hearts. Are they not afraid of getting stuck or knocking off the second stage with a diving bottle on their back? (It’s better to use side mounts when passing through small gaps or caves, and there is also this confusion in the seaside cave behind), the propeller at the back is accidental, and my sister escapes from death, but I don’t feel much. When the screen changes, the heroine abandoned the BCD and got out of the water, here The reaction ability of the heroine is amazing, and it feels a bit magical to be able to take off the BCD with one hand in a few seconds. It feels a bit superhuman here.
There was an accident while diving at the seaside. I saw a lot of people spraying it. I want to say a few words, which is also the purpose of writing this film review.
First of all, their preparation is absolutely professional, heating and fire + drying clothes (some people say why diving in such a cold weather, popularize a little knowledge, use a drying clothes, you can dive under the ice, the temperature in the film is absolutely ok, in addition My sister also has long-term cold water diving experience) + spare gas cylinders + radio mask (this is a proper commercial equipment, most of them use masks for leisure or technical diving) + double bottles on the back (why not side with small resentments Hanging, it may be a habit) + a lot of gadgets (let's talk about some uncommon ones, light sticks, cold fireworks, diving knives, three basic professionals will use them, in line with the settings. Computer watch, absolutely professional version, The electronic display of gas volume seems to have a buddy information sharing function, which is really high-end. The elephant, that is, the buoyancy bag is the only common one. There is no Ding Ding stick that I like, it seems that I am too poisonous in recreational diving).
Let’s talk about the personnel, the two sisters, the performance before and after contact, professional scuba divers + high level of free diving (I don’t know much about free diving, but after so many breath holdings + floating up and down, it should be close to the professional. Those trolls in other answers, look for In a swimming pool, you dive for 2m and then lie down and turn over. You can see if you can do it. This sister went up and down several times at 30m and held her breath many times to complete the work. It can only be said that this is an absolute high level)
Let's talk about the dive site. From the introduction of my sister, I am familiar with the dive site and have experienced many dives (the position of the diving bell is a foreshadowing). The current is stable, there is no undercurrent, it is not a tidal zone, and the diving plan is 13m. From their preparations, to deal with This leisure-level diving plan is to kill chickens with a knife. Of course, there was an accident later, and there was a big bug of losing contact with the outside world + the spare gas cylinder was destroyed, which will be detailed later.
Speaking of the distress process, I don’t know if this rockfall is an adaptation of a real event, but this is really hard to come across. It just happens to hit a person, and it can survive after hitting it. It’s a coincidence. Fortunately, the bottom of the sea is only 33m. Coincidentally, they also buried the spare equipment + mobile phone and so on, and the two returned to before liberation.
During the escape process, let’s talk about a few points that have been complained about a lot. The first one is to open the trunk, which made me anxious. After the bottle is sent down, the slightly frustrated performance here is too contrasted with the brave professional-level operation behind it, and it becomes the focus of complaining. Not only this, the first time I ascended, I didn't follow the 5m safety stop (the latter was also consistent, and decompression sickness occurred, which saved a few minutes, and the body became worse later, which affected the time even more). Later, when the gas bottle was delivered for the first time, the gas bottle was removed. This is even more unprofessional. I don't know how to fix it with bcd? Or tying it with a rope is the same thing, and when you go down to find the gas cylinder, you don't need a spool, and you almost can't come back. On the whole, these points make people feel that this sister is acting on her own. Not calm enough about accidents, not skilled enough in diving training, should belong to Xiaobai who has just started diving, but after diving up and down, repairing clothes and changing equipment, there is nothing wrong, these are only well-trained professionals. This contrast is a bit too strange. It can only be explained by encountering an accident, being excited, and having a unclear mind. In short, the sense of disobedience is very strong. The younger sister's consistent professional performance, perfectly embodied the diving spirit clam down & carry on, dealt with quickly and calmly after being trapped, and the whole process was error-free. The two sisters are two extremes. The contrast between the front and rear of the sister is too great. The early stage is stupid like a dog and the later stage is fierce like a tiger. The sister is calm and has no mood swings throughout the whole process. In these cases, this self-emotional control is harder than steel bars.
The underwater part has no urine spots throughout the whole process. It is very professional. I did not see any discrepancies. The overall handling, including the rescue method, is extremely correct. It can be used as a teaching material. I assume that I am in this situation, I guess I will send a gas bottle and actively seek assistance, and the rest will be left to fate, so after watching this movie, I still think that the two sisters are awesome, which is a miracle.
5 points to give this film professional no urination. Regarding my sister's mistakes in the early stage, I explained it with an accident and a dizzy explanation, and it was too brave and powerful in the back. This contrast may want to make a before and after contrast processing effect, but It gives the impression that the early stage is too stupid, which annoys the audience, and the latter is full of professionalism, but non-professionals can't get this point, so the comments are relatively bleak.
A strange point is that the snow on the car thickened a little too fast (the first time I got into the water, it looked like it was about 3cm after I got up), a bottle of gas, it is estimated that it will take 1 hour, and the snow in the video is not floating. It feels so fast.
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