raft

Raft recognition

Record the evidence that the referent is a complete raft and identify ambiguous classifications.

1. What construction and intended-use evidence identifies this as a raft? definition
2. Is the referent a complete craft, a supporting pontoon, an inflatable boat or a floating dock? boundary

Intended service evidence

Record whether the raft is intended for transport, recreation, work or survival and what supports that designation.

1. Which intended service and raft variant are documented for this design? definition
2. Which manufacturer record, design document or other source supports that intended service? provenance

Flotation element arrangement

Record buoyant members, sealed floats or inflatable chambers and evidence about consequences of local failure.

1. Which members, floats or chambers provide buoyancy, and which are independent? definition
2. What evidence describes the remaining flotation after one element becomes waterlogged, punctured or flooded? provenance

Load and freeboard assessment

Record capacity evidence alongside observed loading, edge immersion and changes in attitude.

1. What total load, distribution and freeboard at identified points are recorded for the assessed configuration? measurement
2. What documented constraints govern adding occupants, moving cargo or concentrating weight near an edge? action

Assembly load paths

Record lashings, fasteners, frame joints and floor attachments that transfer loads between raft elements.

1. How are buoyant elements joined to each other and to any deck, frame or floor? definition
2. Which observed loosening, wear, deformation or separation requires repair or withdrawal under the applicable guidance? action

Buoyancy retention condition

Record relevant evidence of waterlogging, cracking, corrosion, fabric damage, seam failure or valve leakage.

1. Which damage or deterioration affects the raft's actual flotation materials and enclosures? measurement
2. For inflatable chambers, what pressure or leak-check procedure and acceptance criteria are specified? provenance

Manoeuvring capability

Record propulsion and steering equipment, including rafts whose movement principally follows drift or towing.

1. Does the raft move by paddles, oars, poles, sail, motor, towing or uncontrolled drift? definition
2. What evidence supports its ability to turn, stop or reach a landing in the proposed conditions? action

Tow and mooring suitability

Distinguish fittings intended to carry towing or restraint loads from handles and occupant support lines.

1. Which attachment points are documented for towing, mooring or anchoring, and under what limits? provenance
2. Does the proposed line arrangement load those fittings as intended without obstructing boarding or creating an identified entanglement hazard? action

Deployment and boarding provisions

Record assembly or inflation prerequisites and provisions for entering, remaining aboard and reboarding.

1. Which assembly, inflation, equipment and inspection steps must be completed before launch? action
2. How can intended occupants board or reboard, and what evidence supports those provisions under load? action

Use envelope and upset response

Record applicable environmental restrictions, service requirements and variant-specific recovery guidance.

1. Which documented limits and applicable requirements govern this raft's use in current, waves, wind, temperature or shallow water? provenance
2. What documented actions apply if this variant capsizes, grounds, loses pressure or becomes awash? action

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

• The sense assumed is the physical watercraft, excluding biological rafts and the Raft consensus algorithm.
• No single useful capacity or dimensional range spans traditional transport rafts, recreational inflatables and survival rafts.
• The listed standards concern liferafts rather than every raft; applicable editions and vessel-specific requirements require verification.

1. Which of these check these first hold for the sense of raft this model covers, and on what evidence? provenance

Kinds and varieties

Recalled without web access and unsourced; every item is a lead to verify.

• Log or timber raft
• Bamboo raft
• Pontoon raft
• Inflatable recreational raft
• Inflatable liferaft
• Rigid liferaft

1. Which of these kinds and varieties hold for the sense of raft this model covers, and on what evidence? provenance

Standards and regulation

Recalled without web access and unsourced; every item is a lead to verify.

• International Maritime Organization (IMO): SOLAS Chapter III addresses life-saving appliances, including liferafts, on ships within its scope.
• International Maritime Organization (IMO): International Life-Saving Appliance (LSA) Code specifies requirements for inflatable and rigid liferafts.
• International Organization for Standardization (ISO): ISO 9650 series covers inflatable liferafts for small craft.

1. Which of these standards and regulation hold for the sense of raft this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

• Transporting people and goods across or along waterways
• Whitewater recreation and guided river travel
• Emergency survival after abandoning a vessel
• Supporting work platforms on water
• Moving timber downstream in assembled floating units

1. Which of these real-world use hold for the sense of raft this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

• Loss of buoyancy through puncture, leakage, waterlogging or failure of flotation elements
• Overloading or uneven loading that reduces freeboard or causes instability
• Capsizing or occupant ejection in waves, rapids or strong currents
• Separation of structural members following failure of lashings, joints or attachments
• Entrapment against obstacles or in ropes, with risks of drowning and cold-water exposure

1. Which of these failure modes and hazards hold for the sense of raft this model covers, and on what evidence? provenance

Regional variation

Recalled without web access and unsourced; every item is a lead to verify.

• Traditional construction reflects locally available materials, including timber, bamboo and reeds.
• Operating rules vary by jurisdiction and by whether the raft is used recreationally, commercially or as shipboard survival equipment.

1. Which of these regional variation hold for the sense of raft this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

• boat - A conventional boat supports its load primarily through a shaped hull; a raft uses a buoyant platform or assembled flotation elements, although terminology overlaps.
• pontoon - A pontoon is a buoyant supporting body; a raft may incorporate several pontoons as components.
• lifeboat - A lifeboat is a hull-based survival craft; a liferaft is a raft-based survival craft, often inflatable.
• floating dock - A floating dock primarily provides a moored landing or access structure; a raft primarily serves as a floating carrier or platform.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of raft this model covers, and on what evidence? provenance