sailing
Enable an AI agent to recognise a sailing activity, assess its operating state and constraints, and identify feasible next actions within the crew's competence and authority.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an AI agent to recognise a sailing activity, assess its operating state and constraints, and identify feasible next actions within the crew's competence and authority.
Sailing is the activity of operating a vessel or other sail-equipped craft by using wind acting on its sails to provide propulsion and controlling its course through sail trim, steering and resistance to sideways motion.
It can be Classify a sailing episode by purpose, phase and actual propulsion mode.; Compare candidate routes against wind direction, current, depth and available sailing angles.; Identify preparations and crew assignments required for a proposed tack, gybe or sail change.; Flag observations that indicate reduced control or departure from the declared operating envelope.; Compare continuing, shortening sail, changing route and seeking shelter using explicit assumptions.; Record manoeuvres and outcomes for passage review and crew learning..
Distinguishing features
Wind acting on sails supplies or is intended to supply propulsion; drifting under bare poles alone is not active sailing.
The activity concerns controlling a waterborne craft, rather than merely possessing, designing or observing a sailboat.
A desired route must be reconciled with headings the craft can sail under the prevailing wind; pointing directly toward a destination does not establish that it is reachable on that heading.
Motor-only travel is recorded as an auxiliary phase of a sailing passage rather than treated as equivalent to movement under sail.
Racing is one possible purpose of sailing, not a requirement for an activity to qualify.
Scope
+ The purpose, boundaries and current phase of a sailing session or passage
+ The relationship between wind, sail configuration, heading and vessel motion
+ Crew roles, competence and coordination during sail handling
+ Route feasibility under wind, current, depth and clearance constraints
+ Operating limits, developing hazards and decisions to continue, alter course or seek shelter
- Detailed design, manufacture and maintenance of sailing vessels and equipment
- General aerodynamic and hydrodynamic theory
- Administration of sailing clubs, competitions and sporting classifications
- Ownership, registration and commercial operation of vessels
- Land sailing, ice sailing and airborne wind sports
- The complete legal and navigational frameworks governing all waterborne traffic
Characteristics
- Activity purpose
- recreation | training | racing | transport | working passage | mixed Purpose changes acceptable objectives, scheduling constraints and the criteria for successful completion.
- Operating phase
- preparing | departing | sailing steadily | manoeuvring | arriving | sheltered | suspended | completed The phase determines which observations, preparations and crew actions are relevant.
- Propulsion mode
- sail only | motor-sailing | motor only | unpowered drift | stationary The actual mode affects control options and the applicability of externally defined navigation rules.
- Apparent wind at the craft
- speed in knots or m/s and angle in degrees relative to the bow, with timestamp and measurement method Apparent wind informs sail trim and manoeuvring; it must not be confused with a forecast of true wind.
- Motion through water and over ground
- speed through water and speed over ground in knots; heading and course over ground in degrees with reference convention Separating these quantities exposes current and leeway effects on progress and clearance.
- Sail configuration
- sails set, reefing state, trim state and observed defects, using vessel-specific terminology Available sail area and its configuration affect propulsion, balance and the effort required to maintain control.
- Crew readiness
- assigned people linked to roles, demonstrated skills, availability and current fatigue A manoeuvre feasible for the craft may be infeasible for the crew currently available.
- Operating envelope
- activity linked to vessel-specific limits, crew limits and observed or forecast conditions Decisions require contextual limits rather than universal wind or wave thresholds.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.sailing
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 19 findings · 29 questions.
Activity and intent Establishes which sailing activity is being represented and what it is trying to achieve.
A training exercise, race leg and cruising passage may use the same craft but require different interpretations of progress and acceptable actions.
Episode boundaries
Identifies the activity instance and its relationship to a broader outing or passage.
Sailing episode
Record the start, end and included phases without implying that every phase uses sail propulsion.
- What marks the beginning and end of this sailing episode? boundary
- Which motor-only, anchored or shore preparation phases belong to this episode? definition
Purpose and success
Connects the intended outcome to decisions during the activity.
Sailing objective
Record the destination, exercise, race objective or working task and the conditions under which it may be revised.
- Is success defined by reaching a destination, practising a manoeuvre, completing a race or another sailing outcome? definition
- Which changes in conditions should cause the crew to revise or abandon that objective? action
Wind, sails and control Represents the craft's current propulsion and controllability through the relationship between wind, sails and motion.
Sailing decisions depend on relative wind and vessel response, not simply on whether sails are raised.
Wind and point of sail
Separates wind observations from the craft's heading and feasible sailing angles.
Wind-relative motion
Record apparent and true wind distinctly, together with point of sail and uncertainty about headings the craft can sustain.
- What are the current wind speed and direction, and are they apparent, true or forecast values? measurement
- Which headings can this craft sustain under sail in these conditions, and what observations support that assessment? boundary
Sail plan and response
Links sail configuration to observable handling and available adjustments.
Sail balance and control
Record sails set, reefing, trim and signs such as persistent luffing, excessive heel or difficulty holding course without assuming one configuration fits every rig.
- Which sails and reefs are in use, and what heel, helm response and sail behaviour are observed? measurement
- Which trim or sail-area changes are available within this rig's procedures and the crew's capabilities? action
Crew and manoeuvres Represents the people, preparations and coordinated actions required to change the sailing state.
Tacks, gybes and sail changes require sequences of actions whose feasibility depends on crew readiness and craft configuration.
Crew capability
Connects sailing tasks with available people and their current ability to perform them.
Role and readiness
Record who has command, who handles helm and sails, and whether fatigue or limited experience restricts the proposed operation.
- Who is responsible for command, lookout, helm and sail handling during the next manoeuvre? action
- What evidence supports each assigned person's readiness for this craft and these conditions? provenance
Manoeuvre execution
Tracks a manoeuvre from intention through preparation to a stable resulting state.
Tack, gybe and sail change
Record the intended manoeuvre, available sea room, crew acknowledgement and criteria for completion or recovery.
- What preparation and acknowledgement are required before this tack, gybe or sail change on this craft? action
- What observed heading, sail state and control response indicate completion or a need to recover? measurement
Passage and water space Relates sailing performance to the route, surrounding water and other traffic.
A navigable line on a chart may not be achievable under sail, and a feasible heading may still lead toward danger over ground.
Route feasibility
Evaluates progress through sailing legs rather than assuming direct travel to each destination.
Wind and current route
Record candidate legs, expected tacks or gybes, current effects and uncertainty in arrival or tidal timing.
- Which legs require tacking or gybing, and how do current and leeway change the expected track? measurement
- When would inadequate progress or a missed tidal window require a different route or propulsion mode? action
Clearance and encounters
Connects the craft's movement and configuration to physical clearances and traffic constraints.
Available manoeuvring space
Record depth, overhead clearance, lee-shore exposure and traffic encounters while linking applicable navigation rules to their external authority.
- What under-keel clearance, mast clearance and sea room remain along the intended track and during a manoeuvre? measurement
- Which navigation rules or local restrictions apply to this encounter and the craft's actual propulsion mode? boundary
Conditions and contingencies Tracks changing exposure, operating limits and options for recovering or ending the activity.
Sailing requires repeated reassessment because wind, waves, equipment condition and crew capacity can change the set of feasible actions.
Operating envelope
Relates observed and forecast conditions to limits appropriate to this craft, crew and route.
Conditions against limits
Record the basis of wind, sea-state, visibility and endurance limits, including uncertainty and signs of deteriorating control.
- What observed and forecast conditions are approaching the declared limits for this craft, crew and route? measurement
- Who established those limits, using which vessel guidance, experience or other evidence? provenance
Recovery and shelter
Identifies contingency options that remain achievable from the current sailing state.
Contingency options
Record craft-appropriate options for loss of control, equipment failure or a person overboard, together with reachable shelter and prerequisites for each option.
- Which recovery procedures are established for this craft, and can the present crew execute them with the equipment available? action
- Which shelter or stopping options remain reachable if sail propulsion, steering or auxiliary power becomes unavailable? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- No registry sense was supplied; this describes the activity, principally on water, rather than a scheduled vessel departure.
- The listed kinds overlap: craft categories and purposes are separate dimensions, and inclusion of sailboards or land and ice craft depends on the intended boundary.
- Rule editions, local legal applicability and craft-specific performance figures require verification before operational use.
- Which of these check these first hold for the sense of sailing this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Dinghy sailing
- Keelboat sailing
- Multihull sailing
- Cruising
- Sail racing
- Windsurfing
- Which of these kinds and varieties hold for the sense of sailing this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Sail numbers and national sail letters - National letters and a sail number, sometimes accompanied by a class insignia - Identify boats within racing and class systems; they are not universal identifiers for the activity or necessarily globally unique.
- Which of these identifiers and schemes hold for the sense of sailing this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- World Sailing's Racing Rules of Sailing govern racing conducted under those rules.
- World Sailing's Equipment Rules of Sailing define equipment terms and measurement conventions for racing.
- World Sailing's Offshore Special Regulations specify minimum equipment, accommodation and training requirements for offshore racing where adopted.
- The International Maritime Organization's International Regulations for Preventing Collisions at Sea govern vessel conduct and collision avoidance within their scope.
- Class associations and relevant sailing authorities issue class rules governing eligible racing boats and equipment.
- Which of these standards and regulation hold for the sense of sailing this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Recreational day sailing and cruising
- Competitive racing
- Voyaging and expedition travel
- Sail training and seamanship education
- Wind-powered transport of people and goods
- Which of these real-world use hold for the sense of sailing this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Boat speed through water or over ground - Many small recreational displacement sailboats commonly travel at roughly 3-8 knots; conditions and craft design produce substantial variation. - knot
- True or apparent wind speed - No universal operating range; suitability depends on craft, crew and conditions. - knot or metre per second
- Wind angle relative to the bow - 0-180 degrees on either side; the unsailable upwind sector depends on the craft and conditions. - degree
- Which of these typical measurements hold for the sense of sailing 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.
- Capsize, knockdown or loss of stability
- Person overboard, with drowning or cold-water exposure
- Collision or grounding
- Rigging, sail or steering failure that reduces control
- Uncontrolled gybes and loaded lines causing impact, entanglement or crush injuries
- Which of these failure modes and hazards hold for the sense of sailing this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Inland navigation rules and local harbour requirements can differ from the international collision regulations.
- Operator qualifications, vessel registration and compulsory safety equipment requirements vary by jurisdiction.
- Tidal waters, sheltered lakes and offshore waters require different navigation and seamanship practices.
- Which of these regional variation hold for the sense of sailing 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.
- Boating - Boating includes operating recreational craft powered by engines, paddles or oars; sailing specifically uses sails for wind propulsion.
- Yachting - Yachting concerns recreational or sporting use of yachts, including motor yachts; sailing also includes craft such as dinghies and sailboards.
- Navigation - Navigation determines position and plans or follows a route; it is one component of sailing and also occurs in other transport modes.
- Seamanship - Seamanship encompasses the practical skills of handling and maintaining vessels, whether sail-powered or otherwise.
- Sail racing - Sail racing adds competition under defined rules; sailing also includes noncompetitive activity.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of sailing this model covers, and on what evidence? provenance
What the second pass must settle
- Does the registry intend sailing to include windsurfing, kite-propelled watercraft and autonomous sailing craft, or are these covered by neighbouring entries?
- Does an existing Vercy world model already own this activity, requiring this registry entry to link to it?
- Which authoritative sailing references should establish terminology and distinguish broadly applicable concepts from rig-specific procedures?
- How should vessel guidance, crew judgement and organiser-imposed limits be represented when they disagree about acceptable sailing conditions?
- Which racing-specific decisions belong in this activity model, and which should be delegated to a separate racing model?