Акустическое доплеровское измерение
A navigational process using Doppler sonar to measure vessel speed and direction relative to water, crucial for precise manoeuvring and dynamic positioning.
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Maneuvering
Browse Maneuvering terms for maritime professionals.
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Блок опорных движений
A device that detects and reports a vessel’s six degrees of motion, used to support dynamic positioning and other navigational systems.
View termБлокировка азимутального движителя
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 termБлокировка машинного телеграфа
A failure or obstruction in the engine telegraph system, preventing bridge orders from being transmitted to the engine room or vice versa.
View termГидростатическое изменение дифферента
Change in a vessel’s longitudinal trim resulting from variations in hydrostatic forces due to ballast, cargo, or water density changes.
View termДистанция аварийной остановки
Measured distance travelled from full ahead to complete stop using maximum astern power and rudder amidships.
View termЗапрос буксирной помощи
Formal VHF or written message from vessel or pilot to harbour authority asking for specified tug support for manoeuvring.
View termИмпульс обратной тяги
A short, controlled burst of astern propulsion to quickly reduce a vessel’s forward speed or stop movement during precise manoeuvring.
View termИнтеграция управляющих поверхностей
The coordinated operation of rudders, stabilisers, and other movable surfaces to achieve optimal vessel steering and stability.
View termИспользование носового подруливающего
Use of bow thruster to generate lateral force at bow for precise positioning or counteracting environmental forces during manoeuvring.
View termКлиренс крыльев ходовой рубки
Minimum air gap required between ship’s bridge wing extremities and shore structures or lock walls during manoeuvring.
View termКомпенсация задержки команды
Systematic adjustment made to navigation or machinery commands to account for time lag between order and vessel response, ensuring precise manoeuvring.
View termКомпенсация плотности воды
The adjustment made to vessel loading or draught calculations to account for local water density, affecting buoyancy and safe draft.
View termКомпенсация рыскательного момента
Adjustment of rudder angle, thruster output, or tug forces to counteract undesired yawing moments during low-speed manoeuvres.
View termКонтакт с панелью кранцев
The point or process where the vessel's hull makes contact with the berth fender panel, usually monitored to avoid structural damage.
View termКонтролируемый дрейфовый угол
Intentional small leeway angle set between vessel heading and track to counter cross-wind or current during approach.
View termКонтроль глиссирующей траектории
Continuous monitoring and adjustment of a vessel’s approach trajectory to the berth, ensuring a smooth, controlled entry under varying environmental forces.
View termКонтроль натяжения швартовов
Real-time supervision of static and dynamic loads on mooring lines to maintain safe tension limits under environmental forces.
View termКонтроль отклонения
Active steering or thruster management to prevent a vessel from swinging away (sheering off) from its intended track or berth during approach.
View termКонтроль продольного качания
Management of longitudinal oscillations of vessel while moored, using winch tension adjustments or tug assistance to prevent contact damage.
View termКонтроль реверсивного момента
Verification that astern power has arrested forward momentum before changing engine orders during docking sequence.
View termКонтроль скорости изменения курса
Autopilot or manual feedback setting that governs how rapidly the vessel’s heading may change, expressed in degrees per minute.
View termКонтроль угла бокового сноса
Continuous observation of vessel’s lateral drift angle relative to track to ensure safe approach trajectory during docking.
View termКоррекция поворотного смещения
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 termКоррекция угла упреждения
Adjustment applied to ship’s heading to offset predicted set and drift so that actual track leads planned approach line.
View termКоэффициент носового момента
A calculated factor describing the turning moment generated by the bow, crucial for assessing vessel manoeuvrability during pilotage and berthing operations.
View termКоэффициент эффективности подруливающего устройства
A calculated ratio indicating how effectively a vessel’s thruster converts power input into thrust for manoeuvring operations.
View termКрутильные вибрации вала
Oscillation in the propulsion shaft caused by variations in torque, potentially leading to machinery damage if not controlled.
View termКурс захода на слип
The planned or observed vessel path when aligning for entry onto a slipway, critical for safe launching or hauling operations.
View termЛазерная швартовная система
High-precision laser array projecting range and angular deviation data to vessel displays for centimetre-level berthing accuracy.
View termМанёвр быстрой остановки
Emergency procedure whereby engine is set full astern and helm hard over to rapidly stop vessel’s forward motion within minimum distance.
View termМаркер дистанции подхода
Painted, lit, or electronic reference indicating remaining longitudinal distance to berth face during final approach.
View termМодель распределения тяги
A computational approach for optimally distributing propulsion thrust among multiple thrusters to achieve desired vessel motion and heading.
View termНатяжение буксирного троса
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 termНулевая установка шага ВРШ
The position of a controllable pitch propeller (CPP) where the blades are aligned to produce no thrust, used for stopping or neutral operation.
View termОбратная тяга водомёта
A manoeuvring action where the direction of waterjet propulsion is reversed, providing astern thrust for stopping or moving the vessel backwards.
View termОгни выравнивания у причала
Pair or range of fixed shore lights that provide visual guidance to vessels for centreline alignment during final approach to berth.
View termОграничитель угла руля
Device or setting restricting maximum rudder angle to prevent over-steer at speed or protect steering gear.
View termОстановка подруливающего устройства
The process of safely reducing thruster power and shutting down the units after manoeuvring or while leaving station keeping mode.
View termОтклик двигателя на нагрузку
The manner and speed at which the main engine adapts to sudden changes in power demand, crucial for manoeuvring and heavy weather operation.
View termОтмена определения позиции
Command to discontinue planned position fixing process when results are unreliable or time-critical manoeuvre takes priority.
View termОтрицательный шаг ВРШ
A controllable pitch propeller blade setting that provides astern thrust for stopping or reversing the vessel.
View termОценка бочкового хода винта
Evaluation of sideways movement (walk) caused by propeller rotation while making headway or sternway at low speed.
View termОценка периода крена
An evaluation of the time taken for a vessel to complete one full roll oscillation, essential for stability analysis and safe loading.
View termОценка подушечного эффекта
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 termОценка тактического диаметра
Assessment of the vessel’s maximum transverse distance travelled during a turning circle with constant rudder angle at full speed.
View termОценка точки поворота
Calculation of the vessel’s instantaneous longitudinal pivot point to predict turn characteristics in low-speed manoeuvring.
View termОценка эффекта всасывания
The assessment of negative pressure that draws a vessel toward another object or structure during close-quarter manoeuvring, affecting control and safety.
View termПетля обратной связи рулевого управления
A control system that continually monitors rudder position and vessel heading to automatically correct steering and maintain set course.
View termПлан компенсации боковой силы
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 termПоглощение энергии кнехтами
Capacity of berth fender system to absorb kinetic energy of vessel at specified berthing velocity without exceeding design deflection.
View termПоложительный шаг ВРШ
A controllable pitch propeller blade setting that provides forward thrust, the amount adjusted for desired vessel speed and power.
View termПоперечное течение в канале
Lateral water flow across a dredged channel causing set and drift that must be compensated during navigation.
View termПоперечный эффект винта
Side-force generated by propeller rotation causing yaw, especially stern kick to port or starboard when powering ahead or astern.
View termПотеря эффективности руля
Reduction in steering response due to low water flow over rudder, cavitation, or mechanical limitation.
View termПошаговой прирост мощности
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 termПредельная скорость швартовки
Maximum allowable approach speed normal to berth to prevent fender overload and structural damage.
View termПредупреждение зоны взаимодействия
Advisory issued when proximity of shallow banks or passing vessels may cause hydrodynamic interaction affecting steering and under-keel clearance.
View termПроверка боллард-пула
Confirmation that a tug’s certified bollard-pull matches terminal requirements before allocating towage tasks.
View termПроверка защиты гребного винта
Inspection of the propeller guard for integrity and correct positioning before manoeuvring or departure, ensuring safe protection against entanglement or damage.
View termПроверка обратного импульса
Verification manoeuvre carried out to ensure the vessel’s astern power can promptly overcome residual forward momentum before final approach or emergency stop.
View termПроверка пригодности причала
A verification process to ensure the selected berth meets vessel requirements in terms of depth, length, fendering, and operational limits before mooring.
View termПроверка свободного пространства под давит
Process of ensuring the davit’s operational path is free of obstruction and ready for safe lifeboat launching or recovery.
View termПроверка траектории подхода
Confirmation that vessel’s intended approach line aligns with planned track and pilot’s instructions before final manoeuvring.
View termПрогнозатор скорости поворота
ECDIS or radar-derived graphic that projects vessel’s future position based on present speed and rate of turn settings.
View termРазгон подруливающего устройства
A procedure where thrusters are gradually powered up and tested before being engaged for manoeuvring or station keeping.
View termРасчёт дистанции продвижения
Determination of the longitudinal distance the vessel travels on the original heading during a turn from rudder order until reaching new course.
View termРежим динамического позиционирования
A control mode where a vessel maintains its heading and position automatically using thrusters and propellers, essential for offshore operations and station keeping.
View termРежим маневрирования джойстиком
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 termРежим расчёта проскальзывания
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 termРежим стабилизации скорости поворота
Autopilot setting that dampens oscillations by keeping rate of turn constant once a target value is reached during manoeuvre.
View termРезерв мощности заднего хода
Remaining astern propulsion capacity beyond that required for standard manoeuvre, ensuring additional stopping margin.
View termСигнал тревоги угла сноса
Navigation sensor alert triggered when vessel’s leeway or sideslip exceeds predefined safe threshold relative to track.
View termСигнализация глубины воды
An alert activated when the measured depth beneath a vessel approaches a pre-set minimum, used to avoid grounding.
View termСигнализация синхронизации руля
An alert indicating a mismatch between helm (steering wheel) position and rudder angle, requiring immediate attention to prevent loss of steering control.
View termСигнализация скорости задним ходом
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 termСинхронизация шага винтов
Matching of pitch angles on controllable-pitch propellers to balance thrust and avoid yaw during twin-screw operations.
View termСмена точки тяги буксира
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 termСнижение скорости постановки на якорь
Deliberate decrease in vessel speed to a safe limit before anchor deployment, minimizing anchor dragging and ensuring proper holding.
View termСопротивление вязкого потока
The resistance experienced by a vessel as it moves through water due to the fluid’s internal friction, affecting speed and fuel efficiency.
View termСтратегия управления инерцией
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 termСъём запаса под килем
Hydrographic assessment confirming minimum clearance between keel and seabed along planned passage meets safety criteria.
View termТяговое усилие кабестана
Maximum continuous line-pull that a deck capstan can exert when hauling mooring lines at rated speed.
View termУдержание нулевой скорости
A function in vessel control systems where speed is automatically kept at zero, holding position against wind, current, and drift, without anchoring.
View termУдерживающая сила тормоза лебёдки
Certified static load that a mooring-winch brake can safely withstand without paying out when lines are under tension.
View termУклон пандуса причала
The measured incline of a docking ramp, influencing the safe entry, exit, and support of a vessel during docking or undocking.
View termУправление продольным моментом качки
The regulation of longitudinal pitching moments of a vessel, using ballast or thrusters, to ensure stability and reduce motion in varying sea states.
View termШвартовка при сильном ветре
A berthing operation performed in high wind conditions, requiring specific techniques, increased tug assistance, or thruster use to maintain control and safety.
View termЭлектронное устройство швартовки
Shore-based microwave or laser sensor system providing real-time range, closing speed, and alignment data to approaching vessel.
View termЭнергетический бюджет швартовки
The total kinetic energy allowed for a vessel to safely berth, accounting for mass, speed, and fender capacity to prevent damage.
View term