Autor: dmartincastro

ENG I´m a dive instructor teaching at Windhoek Underwater Club, in Namibia. I have ample experience on teaching, from Open Water to Technical Diving, including most specialties, creating even one of my own (Limited Visibility Diver). After diving for years I found that some basics of diving are unknown for most divers. This blog intends to help divers, experienced or not, to understand better some aspects of diving. ESP Soy un instructor de buceo que enseña en el Windhoek Underwater Club, en Namibia. Tengo una amplia experiencia enseñando todos los niveles, desde básico hasta buceo técnico, incluyendo la mayor parte de las especialidades. Incluso cree la mía propia (buceo en visibilidad limitada). Después de años de buceo he observado que la mayor parte de los buceadores desconocen algunos básicos del buceo. Este blog pretende ayudar a los buceadores, con experiencia o no, a entender mejor el buceo

Drysuit as a buoyancy bakcup in deep tec dives / Traje seco como sistema de flotabilidad de emergencia en inmersiones técnicas profundas

4 febrero, 2016

English, Español sigue tras el texto en inglés. Some people consider that you can use the drysuit as a buoyancy backup device in case your wing fails during a dive. According to the book, this is acceptable with single o double cylinder and just one deco gas. But not more. Why? Because the amount of … More Drysuit as a buoyancy bakcup in deep tec dives / Traje seco como sistema de flotabilidad de emergencia en inmersiones técnicas profundas

How to descend in waters with low visibility and dark bottom / Cómo descender en aguas con visibilidad limitada y fondo oscuro

28 enero, 2016

English, Español sigue tras el texto en inglés You may think this situation is not that common, but the reality is that this is the main situation in most lakes in the world. If the bottom lies at 20m and you dive from shore, then you have to find a way of knowing where the … More How to descend in waters with low visibility and dark bottom / Cómo descender en aguas con visibilidad limitada y fondo oscuro

Dive knifes: how to choose one / Cuchillos de buceo: como elegir uno

25 enero, 2016

English, Español sigue tras el texto en inglés I´m sure you have checked and see all kind of knifes: big ones, small ones, with a pointed end, a line cutter, scissors, etc. After you have chosen which one you would like to get, then it´s time to think about where to put it: leg, BCD, … More Dive knifes: how to choose one / Cuchillos de buceo: como elegir uno

Altitude Diver Course (PADI) some things to learn / Curso de buceo en altitud (PADI): cosas que aprender

21 enero, 2016

English, Español sigue tras el texto en inglés As with multilevel diver, altitude diving is considered a minor specialty: one of those specialties that you learn by practice (no need of a course), with easy dives and where most of the theory comes from the Advanced Open Water book. There is no additional readings. This … More Altitude Diver Course (PADI) some things to learn / Curso de buceo en altitud (PADI): cosas que aprender

72% as substitute for 100% 02 in deco / 72% como substituto de 100% oxígeno en descompresión 

17 enero, 2016

English, Español sigue tras texto en inglés I used to carry two permanent deco gases: a 50% (sometimes I add some helium depending on my back gas) and O2. Then, if the dive was too deep, I could add some other gases but those two were mandatory. And then I met Patrick Voorma and he … More 72% as substitute for 100% 02 in deco / 72% como substituto de 100% oxígeno en descompresión 

Why dive shallow: another reason to take into account / Porqué bucear poco profundo: otra razón a tener en cuenta

13 enero, 2016

English, Español tras el texto en inglés I´m sure you have heard this advice and you know the reason. However, I guess you do not know why in the deep dive of the PADI Advance Open Water diver, one of the only two main drills to do is to check how the colors fade in … More Why dive shallow: another reason to take into account / Porqué bucear poco profundo: otra razón a tener en cuenta

Basics of diving: hovering made easy / Básicos del buceo: como flotar estático en aguas medias fácilmente 

11 enero, 2016

English, Español sigue tras el texto en inglés I´m pretty sure you have already been introduced and are quite aware about hovering. If you are quite an experienced diver, you shouldn´t have any problem with it by now. However, if you are novice you may struggle getting a position and hover, without moving your arms … More Basics of diving: hovering made easy / Básicos del buceo: como flotar estático en aguas medias fácilmente 

Torches: day, night and backup torches / Linternas para día, noche y de reserva. Cuál es cual y como comprar

7 enero, 2016

English, Español sigue tras texto en inglés Something that always surprises me is how people select torches: they look at the power of the torch measured in lumens, size, material, etc.. Amazingly they just ask “which one is the best torch” depending on their budget. Then, most of the people try the torch in a … More Torches: day, night and backup torches / Linternas para día, noche y de reserva. Cuál es cual y como comprar

Developing a satisfying deep diver course / Cómo desarrollar un curso de Buceo Profundo satisfactorio

4 enero, 2016

English, Español sigue tras el texto en inglés In a previous post I explained why there is a deep diver course and why recreational advanced divers stop at 30 m. The main reason is that most divers start feeling narcosis at 30 m, so the deep diver course exists in order to provide divers with … More Developing a satisfying deep diver course / Cómo desarrollar un curso de Buceo Profundo satisfactorio