Abortar Fijación de Posición
Command to discontinue planned position fixing process when results are unreliable or time-critical manoeuvre takes priority.
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Maneuvering
Browse Maneuvering terms for maritime professionals.
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Absorción de Energía del Defenso
Capacity of berth fender system to absorb kinetic energy of vessel at specified berthing velocity without exceeding design deflection.
View termAlarma de Profundidad de Agua
An alert activated when the measured depth beneath a vessel approaches a pre-set minimum, used to avoid grounding.
View termAlarma de Sincronización del Timón
An alert indicating a mismatch between helm (steering wheel) position and rudder angle, requiring immediate attention to prevent loss of steering control.
View termAlarma de Ángulo de Deriva
Navigation sensor alert triggered when vessel’s leeway or sideslip exceeds predefined safe threshold relative to track.
View termAlarma Velocidad de Popa
An alarm triggered when a vessel's sternway (reverse movement) exceeds a preset speed threshold, alerting crew to possible navigational hazards during astern operations.
View termAplicación del Propulsor de Proa
Use of bow thruster to generate lateral force at bow for precise positioning or counteracting environmental forces during manoeuvring.
View termArranque de Hélice Transversal
A procedure where thrusters are gradually powered up and tested before being engaged for manoeuvring or station keeping.
View termAtraque con Viento Fuerte
A berthing operation performed in high wind conditions, requiring specific techniques, increased tug assistance, or thruster use to maintain control and safety.
View termAviso de Zona de Interacción
Advisory issued when proximity of shallow banks or passing vessels may cause hydrodynamic interaction affecting steering and under-keel clearance.
View termAyuda Electrónica de Atraque
Shore-based microwave or laser sensor system providing real-time range, closing speed, and alignment data to approaching vessel.
View termBloqueo de Hélice Azimutal
A system state where azimuth thrusters are held in a fixed orientation to prevent movement, usually for safety during maintenance or when not required for manoeuvring.
View termBloqueo del Telégrafo de Máquinas
A failure or obstruction in the engine telegraph system, preventing bridge orders from being transmitted to the engine room or vice versa.
View termBucle de Realimentación de Timón
A control system that continually monitors rudder position and vessel heading to automatically correct steering and maintain set course.
View termCambio de Amarre del Remolcador
The coordinated operation in which a tug alters its line connection point or position to adapt to new towage requirements during berthing or unberthing.
View termCambio de Trim Hidrostático
Change in a vessel’s longitudinal trim resulting from variations in hydrostatic forces due to ballast, cargo, or water density changes.
View termCapacidad de Retención del Freno del Cabrestante
Certified static load that a mooring-winch brake can safely withstand without paying out when lines are under tension.
View termCapacidad de Tiro del Cabrestante Vertical
Maximum continuous line-pull that a deck capstan can exert when hauling mooring lines at rated speed.
View termCoeficiente de Eficiencia del Propulsor
A calculated ratio indicating how effectively a vessel’s thruster converts power input into thrust for manoeuvring operations.
View termCoeficiente Momento de Proa
A calculated factor describing the turning moment generated by the bow, crucial for assessing vessel manoeuvrability during pilotage and berthing operations.
View termCompensación de la Densidad del Agua
The adjustment made to vessel loading or draught calculations to account for local water density, affecting buoyancy and safe draft.
View termCompensación de Retardo de Mando
Systematic adjustment made to navigation or machinery commands to account for time lag between order and vessel response, ensuring precise manoeuvring.
View termCompensación del Momento de Guiñada
Adjustment of rudder angle, thruster output, or tug forces to counteract undesired yawing moments during low-speed manoeuvres.
View termComprobación de Idoneidad del Muelle
A verification process to ensure the selected berth meets vessel requirements in terms of depth, length, fendering, and operational limits before mooring.
View termComprobación de Inercia Inversa
Verification manoeuvre carried out to ensure the vessel’s astern power can promptly overcome residual forward momentum before final approach or emergency stop.
View termComprobación del Momento de Reversión
Verification that astern power has arrested forward momentum before changing engine orders during docking sequence.
View termContacto con Panel de Defensa
The point or process where the vessel's hull makes contact with the berth fender panel, usually monitored to avoid structural damage.
View termControl de Desviación Lateral
Active steering or thruster management to prevent a vessel from swinging away (sheering off) from its intended track or berth during approach.
View termControl de Movimiento de Surgencia
Management of longitudinal oscillations of vessel while moored, using winch tension adjustments or tug assistance to prevent contact damage.
View termControl de Tasa de Rumbo
Autopilot or manual feedback setting that governs how rapidly the vessel’s heading may change, expressed in degrees per minute.
View termControl de Trayectoria de Aproximación
Continuous monitoring and adjustment of a vessel’s approach trajectory to the berth, ensuring a smooth, controlled entry under varying environmental forces.
View termControl del Momento de Cabeceo
The regulation of longitudinal pitching moments of a vessel, using ballast or thrusters, to ensure stability and reduce motion in varying sea states.
View termCorrección del Sesgo de Giro
The adjustment made to compensate for a vessel’s natural tendency to turn more easily in one direction due to hull design, wind, or propeller effect.
View termCorrección del Ángulo de Avance
Adjustment applied to ship’s heading to offset predicted set and drift so that actual track leads planned approach line.
View termCorriente Transversal del Canal
Lateral water flow across a dredged channel causing set and drift that must be compensated during navigation.
View termCálculo de Distancia de Avance
Determination of the longitudinal distance the vessel travels on the original heading during a turn from rudder order until reaching new course.
View termDespeje del Alerón de Puente
Minimum air gap required between ship’s bridge wing extremities and shore structures or lock walls during manoeuvring.
View termDistancia de Parada de Emergencia
Measured distance travelled from full ahead to complete stop using maximum astern power and rudder amidships.
View termEfecto Transversal de la Hélice
Side-force generated by propeller rotation causing yaw, especially stern kick to port or starboard when powering ahead or astern.
View termEmpuje Inverso de Chorro de Agua
A manoeuvring action where the direction of waterjet propulsion is reversed, providing astern thrust for stopping or moving the vessel backwards.
View termEstimación del Efecto Cojín
An assessment of the air or water pressure that builds up between a vessel and the berth or another vessel, influencing manoeuvring dynamics during close approach.
View termEstimación del Efecto de Succión
The assessment of negative pressure that draws a vessel toward another object or structure during close-quarter manoeuvring, affecting control and safety.
View termEstimación del Período de Rolido
An evaluation of the time taken for a vessel to complete one full roll oscillation, essential for stability analysis and safe loading.
View termEstimación del Punto de Giro
Calculation of the vessel’s instantaneous longitudinal pivot point to predict turn characteristics in low-speed manoeuvring.
View termEstrategia de Control de Inercia
The procedure and logic used to manage a vessel's inertia during changes in speed or heading, optimizing response time and safety during close-quarters manoeuvring.
View termEvaluación del Diámetro Táctico
Assessment of the vessel’s maximum transverse distance travelled during a turning circle with constant rudder angle at full speed.
View termEvaluación del Paseo de la Hélice
Evaluation of sideways movement (walk) caused by propeller rotation while making headway or sternway at low speed.
View termImpulso de Empuje Inverso
A short, controlled burst of astern propulsion to quickly reduce a vessel’s forward speed or stop movement during precise manoeuvring.
View termImpulso de Potencia Incremental
A technique involving small, timed increases in engine or thruster power to control a vessel’s position or heading precisely during docking or undocking.
View termInspección del Margen Bajo Quilla
Hydrographic assessment confirming minimum clearance between keel and seabed along planned passage meets safety criteria.
View termIntegración de Superficies de Control
The coordinated operation of rudders, stabilisers, and other movable surfaces to achieve optimal vessel steering and stability.
View termLimitador de Ángulo del Timón
Device or setting restricting maximum rudder angle to prevent over-steer at speed or protect steering gear.
View termLuces de Alineación de Atraque
Pair or range of fixed shore lights that provide visual guidance to vessels for centreline alignment during final approach to berth.
View termLímite de Velocidad de Atraque
Maximum allowable approach speed normal to berth to prevent fender overload and structural damage.
View termManiobra de Parada Rápida
Emergency procedure whereby engine is set full astern and helm hard over to rapidly stop vessel’s forward motion within minimum distance.
View termMantenimiento de Posicionamiento Dinámico
A control mode where a vessel maintains its heading and position automatically using thrusters and propellers, essential for offshore operations and station keeping.
View termMantenimiento de Velocidad Cero
A function in vessel control systems where speed is automatically kept at zero, holding position against wind, current, and drift, without anchoring.
View termMarcador de Distancia de Aproximación
Painted, lit, or electronic reference indicating remaining longitudinal distance to berth face during final approach.
View termMedición Doppler Acústica
A navigational process using Doppler sonar to measure vessel speed and direction relative to water, crucial for precise manoeuvring and dynamic positioning.
View termModelo de Asignación de Empuje
A computational approach for optimally distributing propulsion thrust among multiple thrusters to achieve desired vessel motion and heading.
View termModo de Cálculo de Deslizamiento
A navigational mode where a vessel’s slip—the difference between theoretical and actual movement—is monitored and calculated for safe manoeuvring, especially in current-affected waters.
View termModo de Estabilización de Tasa
Autopilot setting that dampens oscillations by keeping rate of turn constant once a target value is reached during manoeuvre.
View termModo Maniobra Joystick
A control setting that allows a vessel to be steered and positioned using a joystick, integrating thrusters and main propulsion for precision movement, especially during berthing.
View termMonitoreo de Tensión de Amarre
Real-time supervision of static and dynamic loads on mooring lines to maintain safe tension limits under environmental forces.
View termMonitoreo del Ángulo de Deriva Lateral
Continuous observation of vessel’s lateral drift angle relative to track to ensure safe approach trajectory during docking.
View termParada de Hélice Transversal
The process of safely reducing thruster power and shutting down the units after manoeuvring or while leaving station keeping mode.
View termPaso Cero de la Hélice CPP
The position of a controllable pitch propeller (CPP) where the blades are aligned to produce no thrust, used for stopping or neutral operation.
View termPaso Negativo de la Hélice CPP
A controllable pitch propeller blade setting that provides astern thrust for stopping or reversing the vessel.
View termPaso Positivo de la Hélice CPP
A controllable pitch propeller blade setting that provides forward thrust, the amount adjusted for desired vessel speed and power.
View termPendiente de la Rampa de Atraque
The measured incline of a docking ramp, influencing the safe entry, exit, and support of a vessel during docking or undocking.
View termPlan de Compensación de Fuerza Lateral
A navigational strategy to counteract lateral forces (wind, current, propeller wash) that may cause a vessel to drift sideways during berthing or channel transit.
View termPredicción de Tasa de Giro
ECDIS or radar-derived graphic that projects vessel’s future position based on present speed and rate of turn settings.
View termPresupuesto Energético de Atraque
The total kinetic energy allowed for a vessel to safely berth, accounting for mass, speed, and fender capacity to prevent damage.
View termPérdida de Eficacia del Timón
Reduction in steering response due to low water flow over rudder, cavitation, or mechanical limitation.
View termReducción de Velocidad de Fondeo
Deliberate decrease in vessel speed to a safe limit before anchor deployment, minimizing anchor dragging and ensuring proper holding.
View termReserva de Potencia Atrás
Remaining astern propulsion capacity beyond that required for standard manoeuvre, ensuring additional stopping margin.
View termResistencia de Flujo Viscoso
The resistance experienced by a vessel as it moves through water due to the fluid’s internal friction, affecting speed and fuel efficiency.
View termRespuesta de Carga del Motor
The manner and speed at which the main engine adapts to sudden changes in power demand, crucial for manoeuvring and heavy weather operation.
View termRevisión del Protector de Hélice
Inspection of the propeller guard for integrity and correct positioning before manoeuvring or departure, ensuring safe protection against entanglement or damage.
View termSincronización del Paso de la Hélice
Matching of pitch angles on controllable-pitch propellers to balance thrust and avoid yaw during twin-screw operations.
View termSistema de Atraque Láser
High-precision laser array projecting range and angular deviation data to vessel displays for centimetre-level berthing accuracy.
View termSolicitud de Asistencia de Remolcadores
Formal VHF or written message from vessel or pilot to harbour authority asking for specified tug support for manoeuvring.
View termTensión de Cabo de Remolcador
The force applied to a tow or mooring line connecting a tug to a vessel, monitored to ensure safe and effective manoeuvring or holding.
View termTrayectoria de Aproximación a la Rampa
The planned or observed vessel path when aligning for entry onto a slipway, critical for safe launching or hauling operations.
View termUnidad de Referencia de Movimiento
A device that detects and reports a vessel’s six degrees of motion, used to support dynamic positioning and other navigational systems.
View termVerificación de Despeje de Pescante
Process of ensuring the davit’s operational path is free of obstruction and ready for safe lifeboat launching or recovery.
View termVerificación de la Ruta de Aproximación
Confirmation that vessel’s intended approach line aligns with planned track and pilot’s instructions before final manoeuvring.
View termVerificación del Bollard Pull
Confirmation that a tug’s certified bollard-pull matches terminal requirements before allocating towage tasks.
View termVibración Torsional del Eje
Oscillation in the propulsion shaft caused by variations in torque, potentially leading to machinery damage if not controlled.
View termÁngulo de Deriva Controlado
Intentional small leeway angle set between vessel heading and track to counter cross-wind or current during approach.
View term