ISO consists of the following parts, under the general title Personal Flotation Devices PFDs : Part 2: Lifejackets, performance level — Safety requirements Part 3: Lifejackets, performance level — Safety requirements Part 4: Lifejackets, performance level — Safety requirements Part 5: Buoyancy aids level 50 — Safety requirements Part 6: Special purpose lifejackets and buoyancy aids — Safety requirements and additional test methods Part 7: Materials and components — Safety requirements and test methods Part 8: Accessories — Safety requirements and test methods Part 9: Test methods The International Organization for Standardization ISO is a worldwide federation of national standards bodies ISO member bodies. The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
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This level is intended for use by those who are competent swimmers and who are near to bank or shore, or who have help and a means of rescue close at hand. These garments have minimal bulk, but they are of limited use in disturbed water, and cannot be expected to keep the user safe for a long period of time. They do not have sufficient buoyancy to protect people who are unable to help themselves.
They require active participation by the user. This level is intended for those who may have to wait for rescue, but are likely to do so in sheltered water. The device should not be used in rough conditions.
This level is intended for general application or for use with foul weather clothing. This level of lifejacket is intended primarily for offshore use under extreme conditions. It is also of value to those who are wearing clothing which traps air or loads such as tool belts which may adversely affect the self-righting capacity of the lifejacket. This Convention requires that SOLAS requirements are met for all life-saving equipment carried and used on board all ships on international voyages including passenger ships and cargo ships of gross tonnes or more.
This includes lifejackets, abandonment suits and immersion suits. They incorporate inherent buoyancy which gives the wearer flotation and thermal protection in order to provide the optimum chance of survival and rescue before any negative effects of cold water immersion set in and to protect against the risks of drowning.
The primary aims in wearing a constant wear suit are: to reduce the risk of cold shock and to delay the onset of hypothermia; to enable the user to propel himself in the water and extricate himself from the water without it becoming an encumbrance; to make the user sufficiently conspicuous in the water so as to aid his recovery.
Work Vest 50N, ISO 12402-5
Maritime PPE standards
ISO 12402: International standard for personal flotation devices (lifejackets and buoyancy aids)