{"id":23108,"date":"2022-09-07T13:01:09","date_gmt":"2022-09-07T17:01:09","guid":{"rendered":"https:\/\/world.dan.org\/?post_type=dan_alert_diver&p=23108"},"modified":"2023-01-30T17:30:46","modified_gmt":"2023-01-30T22:30:46","slug":"popping-the-question-what-is-a-dsmb","status":"publish","type":"dan_alert_diver","link":"https:\/\/world.dan.org\/fr\/alert-diver\/article\/popping-the-question-what-is-a-dsmb\/","title":{"rendered":"Poser la question : Qu'est-ce qu'un DSMB ?"},"content":{"rendered":"

BALISES DE SURFACE (SMBS) ET BALISES DE SURFACE RETARD\u00c9ES (DSMBS)<\/span><\/strong> sont des dispositifs de s\u00e9curit\u00e9 courants et essentiels. Ces tubes gonflables de couleur vive, parfois appel\u00e9s saucisses de s\u00e9curit\u00e9, sont des pi\u00e8ces d'\u00e9quipement essentielles que les plongeurs doivent emporter lors de la plupart de leurs plong\u00e9es. Les plongeurs les utilisent le plus souvent comme dispositifs de signalisation pour indiquer leur position sous la surface et alerter le trafic maritime. Les plongeurs techniques peuvent utiliser un DSMB comme ligne ascendante pour remplir leurs obligations en mati\u00e8re de d\u00e9compression. Les sauveteurs peuvent les d\u00e9ployer en cas de d\u00e9tresse d'un plongeur, comme un sauveteur utiliserait un tube de sauvetage en surface. Les DSMB font l'objet de plusieurs mythes et id\u00e9es fausses, et de nombreux plongeurs les utilisent de mani\u00e8re inappropri\u00e9e et inefficace.<\/p>\n\n\n\n

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\n

TERMINOLOGIE<\/span><\/strong><\/p>\n\n\n\n

A DSMB is technically an SMB, but an SMB is not a DSMB. Divers can deploy a DSMB on the surface or from depth thanks to an over-pressurization valve (OPV). This valve allows air to escape and relieves the gas that expands, according to Boyle\u2019s Law. An SMB\u2019s design, which lacks an OPV, means it should be inflated only at the surface. If you deploy an SMB from depth, it will sustain physical damage from overexpansion as it ascends. This article will refer to DSMBs as their applications and features are more extensive than their SMB counterparts.<\/p>\n\n\n\n

CARACT\u00c9RISTIQUES TECHNIQUES<\/span><\/strong><\/p>\n\n\n\n

DSMBs are available in various sizes, shapes, and colors \u2014 some are more practical than others. A 4-foot DSMB is sufficient for divers to learn the deployment techniques for training purposes. Outside of a training environment, divers should use at minimum a 6-foot DSMB, which provides better visibility to surface support and other boats, especially in unfavorable seas with large swells. It also offers sufficient lift to avoid being dragged underwater while the diver is ascending.<\/p>\n\n\n\n

L'orange et le jaune sont les couleurs les plus courantes et offrent la meilleure visibilit\u00e9, mais il n'existe pas de couleur standard dans l'industrie. Les DSMB sont \u00e9galement disponibles en rose, blanc, vert et m\u00eame noir, mais certaines couleurs ne sont pas aussi faciles \u00e0 voir \u00e0 la surface en raison de la r\u00e9flexion et de la dissimulation dans certaines conditions diurnes. Certains fabricants ajoutent des bandes r\u00e9fl\u00e9chissantes et un manchon fin et transparent sur le dessus pour accueillir un stroboscope ou une lampe chimique pour un d\u00e9ploiement dans des conditions de faible luminosit\u00e9.<\/p>\n\n\n\n

Certains plongeurs choisissent des couleurs de DSMB sp\u00e9cifiques pour communiquer diff\u00e9rents messages au personnel d'assistance en surface. Cette pratique est la plus courante en plong\u00e9e technique. Par exemple, une DSMB orange peut indiquer que tous les plongeurs sont pr\u00e9sents et vont bien, tandis qu'une DSMB jaune peut signaler une situation d'urgence. Une ardoise ou un carnet de notes sous-marin attach\u00e9 \u00e0 la DSMB jaune peut sp\u00e9cifier le probl\u00e8me et d\u00e9crire les mesures d'intervention requises de la part du personnel d'assistance en surface. Bien entendu, ce syst\u00e8me ne fonctionne que si tous les plongeurs s'accordent sur un plan pr\u00e9d\u00e9fini. Quelle que soit la couleur, tous les plongeurs devraient envisager d'\u00e9crire leur nom en grosses lettres sur leur DSMB, afin que les secours en surface puissent identifier plus facilement le plongeur qui se trouve en dessous.<\/p>\n\n\n\n

TECHNIQUES<\/span><\/strong><\/p>\n\n\n\n

Some divers are adamant about using a reel instead of a spool or vice-versa. Divers should weigh the pros and cons of each and decide based on their personal diving needs. Each has its advantages \u2014 a reel is easier to deploy, but a spool is more difficult to jam.<\/p>\n\n\n\n

Les plongeurs se demandent \u00e9galement s'il faut attacher de mani\u00e8re permanente (pr\u00e9-montage) une bobine ou un moulinet \u00e0 la DSMB pour la pr\u00e9parer \u00e0 un d\u00e9ploiement rapide ou la laisser s'assembler sous l'eau. Le plongeur doit-il fixer la DSMB directement sur son BCD ou la ranger dans une poche ou un \u00e9tui ? Chaque plongeur doit \u00e9valuer ses besoins et d\u00e9cider de l'option la plus pratique pour toutes ces consid\u00e9rations.<\/p>\n\n\n\n

Les avis sont partag\u00e9s en ce qui concerne le gonflage d'un DSMB. Faut-il le gonfler oralement ? Qu'en est-il de l'expiration du deuxi\u00e8me \u00e9tage ou de la purge de l'octopus dans le fond ouvert ? Pourquoi ne pas attacher un inflateur basse pression \u00e0 partir d'une combinaison \u00e9tanche ou d'un gilet de sauvetage ? Toutes les m\u00e9thodes sont viables avec une formation ad\u00e9quate et une pratique r\u00e9guli\u00e8re.<\/p>\n\n\n\n

CONSID\u00c9RATIONS DE S\u00c9CURIT\u00c9<\/span><\/strong><\/p>\n\n\n\n

Il existe quelques r\u00e8gles de s\u00e9curit\u00e9 universelles \u00e0 respecter lors de l'utilisation d'une DSMB. Les plongeurs ne doivent jamais attacher l'enrouleur ou la bobine \u00e0 eux-m\u00eames pendant le d\u00e9ploiement, car s'il se bloque, l'exc\u00e8s de flottabilit\u00e9 peut provoquer une remont\u00e9e rapide. Si vous attachez l'enrouleur ou la bobine alors que le DSMB est d\u00e9j\u00e0 \u00e0 la surface, un bateau qui passe ou un passant curieux \u00e0 la surface peut tirer sur la ligne, provoquant \u00e0 nouveau une remont\u00e9e rapide.<\/p>\n\n\n\n

Tout au long du d\u00e9ploiement d'un DSMB, n'oubliez pas que la lenteur est synonyme de douceur et la douceur de rapidit\u00e9. Les plongeurs doivent garder toutes les lignes tendues et aussi loin que possible de leur corps. Le maintien de cette distance r\u00e9duira le risque d'emm\u00ealement. S'il y a trop de mou dans la ligne, prenez le temps de r\u00e9soudre le probl\u00e8me. Les probl\u00e8mes peuvent s'aggraver rapidement et la ligne ne pardonne pas si un plongeur s'y emm\u00eale.<\/p>\n\n\n\n

Les plongeurs doivent disposer d'un dispositif de coupe facilement accessible \u00e0 chaque fois qu'ils d\u00e9ploient une DSMB. Si possible, un bin\u00f4me de plong\u00e9e doit se trouver \u00e0 proximit\u00e9 pour intervenir en cas d'\u00e9chec ou d'interruption du d\u00e9ploiement.<\/p>\n\n\n\n

Le plus important est que les plongeurs s'entra\u00eenent. Il faut du temps pour ma\u00eetriser le d\u00e9ploiement d'une DSMB. Rendez-vous dans une piscine locale ou dans un autre endroit o\u00f9 l'eau est confin\u00e9e avec votre bin\u00f4me et entra\u00eenez-vous \u00e0 chaque \u00e9tape du processus, en identifiant les domaines o\u00f9 vous avez des lacunes. Demandez de l'aide aux instructeurs et aux mentors. N'ayez pas peur de l'\u00e9chec, car c'est ainsi que l'apprentissage et la m\u00e9moire musculaire se produisent. \u00c0 la fin de chaque plong\u00e9e, envisagez de d\u00e9ployer un DSMB. La r\u00e9p\u00e9tition permet d'acqu\u00e9rir la ma\u00eetrise et le confort d'une comp\u00e9tence que tout plongeur devrait poss\u00e9der. AD<\/p>\n<\/div>\n\n\n\n

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\"\"<\/figure>\n\n\n\n

Les DSMB peuvent aider le personnel de soutien en surface et les autres bateaux \u00e0 localiser les plongeurs en surface.<\/span><\/strong><\/p>\n\n\n\n

<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Un DSMB d'au moins 6 pieds de long permet d'assurer une visibilit\u00e9 suffisante.<\/strong>.<\/span><\/p>\n<\/div>\n<\/div>\n\n\n\n

\u00a9 Alert Diver<\/em> - Q3 2022<\/p>","protected":false},"excerpt":{"rendered":"

SURFACE MARKER BUOYS (SMBS) AND DELAYED SURFACE MARKER BUOYS (DSMBS) are common and essential safety devices. These brightly colored, inflatable tubes, sometimes called safety sausages, are critical pieces of equipment that divers should take on most dives. Divers most often use them as signaling devices to mark their locations below the surface and alert boat [\u2026]<\/p>\n","protected":false},"featured_media":23142,"template":"","dan_alert_diver_categories":[71],"dan_alert_diver_issues":[481],"class_list":["post-23108","dan_alert_diver","type-dan_alert_diver","status-publish","has-post-thumbnail","hentry","dan_alert_diver_categories-gear","dan_alert_diver_issues-q3-2022"],"acf":[],"yoast_head":"\nPopping the Question: What is a DSMB? - DAN World<\/title>\n<meta name=\"description\" content=\"Technical divers may use a DSMB as an upline to fulfill their decompression obligations. 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