Single-screw maneuvering and prop walk
Exam frequency
55%
Difficulty
3/5
Drill questions
59
Source excerpts
33 CFR §164.11
§ 164.11 § 164.11 Navigation under way: General. The owner, master, or person in charge of each vessel underway shall ensure that: (a) The wheelhouse is constantly manned by persons who: (1) Direct and control the movement of the vessel; and (2) Fix the vessel's position; (b) Each person performing a duty described in paragraph (a) of this section is competent to perform that duty; (c) The position of the vessel at each fix is plotted on a chart of the area and the person directing the movement of the vessel is informed of the vessel's position; (d) Electronic and other navigational equipment, external fixed aids to navigation, geographic reference points, and hydrographic contours are used when fixing the vessel's position; (e) Buoys alone are not used to fix the vessel's position…
33 CFR §164.25
§ 164.25 § 164.25 Tests before entering or getting underway. (a) Except as provided in paragraphs (b) and (c) of this section no person may cause a vessel to enter into or get underway on the navigable waters of the United States unless no more than 12 hours before entering or getting underway, the following equipment has been tested: (1) Primary and secondary steering gear. The test procedure includes a visual inspection of the steering gear and its connecting linkage, and, where applicable, the operation of the following: (i) Each remote steering gear control system. (ii) Each steering position located on the navigating bridge. (iii) The main steering gear from the alternative power supply, if installed. (iv) Each rudder angle indicator in relation to the actual position of the rud…
33 CFR §164.35
§ 164.35 § 164.35 Equipment: All vessels. Each vessel must have the following: (a) A marine radar system for surface navigation. (b) An illuminated magnetic steering compass, mounted in a binnacle, that can be read at the vessel's main steering stand. (c) A current magnetic compass deviation table or graph or compass comparison record for the steering compass, in the wheelhouse. (d) A gyrocompass. (e) An illuminated repeater for the gyrocompass required by paragraph (d) of this section that is at the main steering stand, unless that gyrocompass is illuminated and is at the main steering stand. (f) An illuminated rudder angle indicator in the wheelhouse. (g) The following maneuvering information prominently displayed on a fact sheet in the wheelhouse: (1) A turning circle diagram t…
46 CFR §176.814
§ 176.814 § 176.814 Steering systems. At each initial and subsequent inspection for certification the owner or managing operator shall be prepared to test the steering systems of the vessel and make them available for inspection to the extent necessary to determine that they are in suitable condition and fit for the service intended. Servo-type power systems, such as orbital systems, must be tested and capable of smooth operation by a single person in the manual mode, with hydraulic pumps secured.
46 CFR §184.602
§ 184.602 § 184.602 Internal communications systems. (a) A vessel equipped with pilothouse control must have a fixed means of two-way communications from the operating station to the location where the means of controlling the propulsion machinery, required by § 184.620(a) of this part, is located. Twin screw vessels with pilothouse control for both engines are not required to have a fixed communications system. (b) A vessel equipped with auxiliary means of steering, required by § 182.620 of this subchapter, must have a fixed means of two-way communications from the operating station to the location where the auxiliary means of steering is controlled. (c) When the propulsion machinery of a vessel cannot be controlled from the operating station, an efficient communications system must be…
46 CFR §184.620
§ 184.620 § 184.620 Propulsion engine control systems. (a) A vessel must have two independent means of controlling each propulsion engine. Control must be provided for the engine speed, direction of shaft rotation, and engine shutdown. (1) One of the means may be the ability to readily disconnect the remote engine control linkage to permit local operation. (2) A multiple engine vessel with independent remote propulsion control for each engine need not have a second means of controlling each engine. (b) In addition to the requirements of paragraph (a), a vessel must have a reliable means for shutting down a propulsion engine, at the main pilothouse control station, which is independent of the engine's speed control. (c) A propulsion engine control system, including pilothouse control, …
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According to 33 CFR §164.11, the person directing the movement of a vessel is required to set speed with consideration for which of the following factors?
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