NS1 – Navigation Safety 1 Navigation Safety is based almost completely on the Regulations for the Prevention of Collisions at Sea (““). We strongly recommend you get a study guide to help interpret and understand the rules and legalese. In addition you will need to read and Chapter VIII of the. Generac 6500 generator specs. The exam does test you on Canadian Modifications, so you will need to make sure that you are aware which rules have modifications and what they are. Syllabus: (Page 158, Section 11.4) Recommended Reading: This is the printed (by the government) version of the Colregs. Study Guides: or This is also a good guide, with full colour illustrations.
It is useful for the novice seeking understanding and explanations, or for the professional just looking to brush up before an exam. Or This is more of a quick reference book, and is well suited to experienced mariners looking to brush up on their knowledge. Other Resources: The complete code, updated through 2011.
An interactive computer program to help you learn your colregs, and the program will quiz you on different situations. We also carry, which are handy for studying and for maintaining your skills. For this exam the cards Titled “Rules of the Road”, “Sound and Light Signals” and “Lights and Shapes” would all be useful. Downloads: 2 thoughts on “ NS1 – Navigation Safety 1”.
Navigation Light Range This post starts of with the simple facts of COLREG 22 and then delves deeper and deeper into definitions; deep into the world of lux, lumens and candelas. The range of Navigation lights What Rule states the visibility of Navigation lights?
Rule 22-visibility of lights Note: This Rule states that navigation lights shall have an intensity as specified in Section 8 of Annex I to the COLREGS. What is the range of Navigation lights in a vessel of 50 meters or more in length?. Masthead light- 6 miles. Sidelight-3 miles. Sternlight-3 miles.
Towing light-3 miles. A white, red, green or yellow all-round light-3 miles What is the range of Navigation lights in a vessel of 12 meters or more in length but less than 50 meters in length?. Masthead light, 5 miles; except that where the length of the vessel is less than 20 meters, 3 miles. Sidelight- 2 miles. Sternlight-2 miles;. Towing light-2 miles;.
White, red, green or yellow all-round light-2 miles What is the range of Navigation lights in a vessel of less than 12 meters in length?. Masthead light- 2 miles. Sidelight- 1 mile. A sternlight- 2 miles. Towing light-2 miles.
White, red, green or yellow all-round light- 2 miles What is the range of Navigation lights of an inconspicuous, partly submerged vessel or object being towed? White all-round light- 3 miles. The intensity of Navigation lights The intensity required to achieve the minimum range is derived from a formula given in Section 8 of Annex I to the Colregs.
The intensity formula 1=3.43 × 1 06×T × D2 × K-D What do the parts of the Navigation light intensity formula mean? I is luminous intensity in candelas under service conditions The candela is the SI unit of luminous intensity. It is the luminous power per unit solid angle emitted by a point light source in a particular direction. Or to be more accurate, it is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540×1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. The steradian is a square radian, and is the SI unit of solid angle.
T is threshold factor 2 × 10-7 lux The lux is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area.It is equal to one lumen per square metre. It is used as a measure of the intensity, as perceived by the human eye. The lumen is the SI unit of luminous flux, a measure of the total quantity of visible light emitted by a source. D is range of visibility (luminous range) of the light in nautical miles The luminous range is the maximum distance at which a light can be seen, as determined by the luminous intensity of the light, the atmospheric transmission factor and the threshold of illuminance on the eye of the observer. K is atmospheric transmissivity. Atmospheric transmissivity is he ratio of the directly transmitted flux incident on a surface after passing through unit thickness of the atmosphere to the flux that would be incident on the same surface if the flux had passed through a vacuum. The value of K shall be 0.8, corresponding to a meteorological visibility of approximately 13 nautical miles. The Really Handy study guides for Kindle Available for:.
Colregs. Seamanship. Vessel Certification. ISM. Navigation Lights defined Down another level, down past the Rule list, down through the power-driven vessel rule, down to some definitions.
Laws And Regulations Study Guide
A quick guide to Navigation light definitions Where are the definitions for Navigation lights? Section C of the COLREGS, Rule 21. Here are those definitions condensed down to some easy to remember facts. What is a masthead light?.
White light. Placed over the fore and aft centerline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees. So fixed as to show the light from right ahead to 22.5 degrees abaft the beam on either side of the vessel What are Sidelights?. Green light on the starboard side and a red light on the port side. Each showing an unbroken light over an arc of the horizon of 112.5 degrees. So fixed as to show the light from right ahead to 22.5 degrees abaft the beam on its respective side. In a vessel of less than 20 meters in length the sidelights may be combined in one lantern carried on the fore and aft center-line of the vessel.
When did the Red and Green sidelights come into use? In 1848 the UK issued regulations requiring steam vessels to display red and green sidelights as well as a white masthead light.
Rules And Regulations Study Guide
This was a follow on from an act of 1846 that became the basis of the current IMO COLREGS. What is a Sternlight?. White light.
Placed as nearly as practicable at the stern. Showing an unbroken light over an arc of the horizon of 135 degrees. So fixed as to show the light 67.5 degrees from right aft on each side of the vessel What is a Towing light?. Yellow light. Same characteristics as the sternlight What is an all-round light?. A light Showing an unbroken light over an arc of the horizon of 360 degrees What is a Flashing light?. A light flashing at regular intervals at a frequency of 120 flashes or more per minute Why are the arcs of navigation not given in rounded numbers of degrees?
The arcs of navigation lights are based on the traditional mariners compass. In this each ‘point’ is 1/32 of a circle, which is 11.25 degrees. The change in arch between Masthead lights/Sidelights and the sternlight occures at 2 points abaft the beam, that is 22.5 degrees. The Navigation Light Definitions and the Rest of The COLREGS Two vessel situations are defined within the Rules by the aspects of their navigation lights; a crossing situation is implied by being neither of these. Overtaking-Rule 13 A vessel overtaking when coming up with another vessel from a direction more than 22.5 degrees abaft her beam, that is, in such a position that at night she would be able to see only the sternlight of that vessel but neither of her sidelights. Head on (Power-driven vessels)-Rule 14 A head on situation exists when a vessel sees the other ahead or nearly ahead and by night she could see the masthead lights of the other in a line or nearly in a line and/or both sidelights, and by day she observes the corresponding aspect of the other vessel.
The Really Handy Books This is a series of COLREG revision books formatted for Kindle Readers. Part F Collision Regulations Rules 39, 40 and 41 Verification of Compliance A quick pause before commencing the next topic on ship certification to have a look at a change in the Collision Regulations introduced in January 2016. This change introduced a complete new section to the rules; section F.
Section F is concerned with flag state implementation of the Convention, and will have no direct impact on vessels at sea. COLREG Blog update- Since this post was published a new COLREG series of posts has started, exploring the regulations that surround Navigation lights.
PART F – VERIFICATION OF COMPLIANCE WITH THE PROVISIONS OF THE CONVENTION Rule 39 Definitions (a) Audit means a systematic, independent and documented process for obtaining audit evidence and evaluating it objectively to determine the extent to which audit criteria are fulfilled. (b) Audit Scheme means the IMO Member State Audit Scheme established by the Organization and taking into account the guidelines developed by the Organization. (c) Code for Implementation means the IMO Instruments Implementation Code (III Code) adopted by the Organization by resolution A.1070(28). (d) Audit Standard means the Code for Implementation. Rule 40 Application Contracting Parties shall use the provisions of the Code for Implementation in the execution of their obligations and responsibilities contained in the present Convention. Rule 41 Verification of compliance (a) Every Contracting Party shall be subject to periodic audits by the Organization in accordance with the audit standard to verify compliance with and implementation of the present Convention.
(b) The Secretary-General of the Organization shall have responsibility for administering the Audit Scheme, based on the guidelines developed by the Organization. (c) Every Contracting Party shall have responsibility for facilitating the conduct of the audit and implementation of a programme of actions to address the findings, based on the guidelines developed by the Organization. (d) Audit of all Contracting Parties shall be: (i) based on an overall schedule developed by the Secretary-General of the Organization, taking into account the guidelines developed by the Organization; and (ii) conducted at periodic intervals, taking into account the guidelines developed by the Organization. References. Framework and Procedures for the IMO Member State Audit Scheme. The Kindle Book Shelf of COLREG Books.
Question: Who can be an officer of the watch (OOW) Answer: An officer in charge of a navigational watch shall be qualified in accordance with the requirements of STCW 95. Under no circumstances is it permitted for an un-qualified person to take charge of a navigational watch Note-It is the responsibility of the owner or operator, and Master to ensure that every navigational watchkeeping officer is appropriately qualified with respect to the size of the vessel and limitations in the area of operation. Question: What is the UK’s MCA’s view on the use of the OOW as sole lookout?
Answer: The MCA considers it dangerous and irresponsible for the OOW to act as sole look-out during periods of darkness or restricted visibility. Note-The UK M Notice MGN 137 covers the subject of Look-out during periods of darkness and restricted visibility. Some of the key points from this notice are: Ships are not operate with the OOW as the sole lookout during periods of Darkness An additional lookout should be posted at any other times during restricted visibility or when the prevailing circumstances require. All ships must maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions, so as to make a full appraisal of the situation and of the risk of collision.
Failure to maintain proper look can result in prosecution, including custodial sentence. Watchkeeping arrangements for the ship are at all times adequate for maintaining safe navigational watches, having regard to the STCW Code. For some Really Handy Kindle Books to learn and revise the Collision Regulations. This week’s question was-What are the officer of the watch’s two prime responsibilities? Answer: As the Master’s representative the OOW is primarily responsible at all times for the safe navigation of the vessel and for complying with the International Regulations for Preventing Collisions At Sea.Safe Navigation -Compliance with the COLREGS Note-The OOW shall also be aware of the serious effects of pollution of the marine environment and shall take all possible precautions to prevent such pollution. Remember– Rule 1 (a) These rules shall apply to all vessels upon the high seas and in all waters connected therewith navigable by sea going vessels.
The answer to the bonus question was that the vessel is Not Under Command. Two balls=NUC. For some Really Handy Kindle books to learn the Collision Regulations Tagged,. After a brief break in the weekly COLREG questions, here they are again. In this series of posts however the COLREGS will be used to widen the subject outwards to general officer of the watch topics. So if you are studying for OOW exams-follow the blog.
The questions and answers are based on official publications, including the UK Mnotice -MGN 315 ‘The keeping a safe navigational watch on Merchant vessels’. This Mnotice gives the UK’s guidance on complying with the requirements of STCW 95 and its code. A good read for those facing UK MCA examiners. For those of you working under other flags, have a check on line for similar guidance issued by the flag state. So here is the first question- Question: What are the officer of the watches two prime responsibilities?
And as a bonus question- What does the shapes being shown in the picture signify?
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CHECK YOUR PROGRESS ANSWERS COLLISION REGULATIONS Part B Rules & Collision Regulations Question 1 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d In the “Collision Regulations”, the word 'breadth' in relation to a vessel, means: a. Breadth on the main deck b. Greatest breadth c. Moulded breadth d. Breadth at the load waterline Question 2 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d In the “Collision Regulations”, the word 'length' in relation to a vessel, means: a.
Length between perpendiculars b. Waterline length c. Register length d. Length overall Question 3 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d In the “Collision Regulations”, the word 'underway' in relation to a vessel, means: a. Not attached to the sea bottom or shore.
Less than the required speed. Question 4 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d It is prohibited to anchor in a traffic separation scheme. TRUE FALSE Question 5 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d When approaching a traffic separation scheme, a vessel shall: a.
Do so at right angles to the general direction of traffic flow b. Seek permission to do so from all other vessel in the vicinity c. Do so only in a case of an emergency or to engage in fishing within the zone d. Do so at as small an angle as possible as nearly as practical Question 6 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Risk of collision exists when an approaching vessel has: a. An increasing range and bearing b.
A steady bearing and decreasing range c. A steady range and increasing bearing d. A decreasing bearing Question 7 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Risk of collision is considered to exist if: a. A special circumstance situation is apparent b.
Two vessels are nearby c. There is doubt that a risk of collision exists d. Another vessel has a constant range and steady bearing Question 8 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d The passage of vessels which can safely navigate only within a narrow channel shall not be impeded by vessels whose length is less than: a. 100 metres d. 50 metres Question 9 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Which of the vessels listed below shall avoid impeding the safe passage of a vessel not under command?
A fishing vessel b. All of the choices c. A sailing vessel d. A vessel restricted in her ability to manoeuvre Question 10 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Draw the lights of a small vessel with a short tow below.
Question 11 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d In your power boat you sight a yacht approaching you from about 45 ° on your starboard beam, The correct action for you to take is: a. Reduce speed c. Increase speed d. Maintain course and speed Question 12 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d While travelling up the coast in your workboat you observe another power-driven vessel on your port bow.
Your duty is to: a. Alter course to port d. Alter course to starboard Question 13 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d A Seaplane should be keep well clear of a a. Vessel engaged in fishing b. All of the choices c. Sailing vessel d.
Power driven vessel Question 14 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d You are sailing with the wind on your port quarter. You observe another sailing vessel upwind approaching on a steady bearing. You should keep clear. TRUE FALSE Question 15 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d You are making way in restricted visibility when you hear the sound of a fog signal forward of your beam. You are required to reduce speed to: a. A moderate speed commensurate with conditions b. The minimum where your vessel can be kept on course c.
Half speed if proceeding at a higher speed d. A safe speed in relation stopping distance Question 16 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d The minimum visibility range of a sternlight on vessels of 12 mtrs or more but less than 50 mtrs in length is: a.
1 mile Question 17 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d A vessel engaged in mine clearance operations should not be approached closer than 2000 metres astern and 500 metres either side. TRUE FALSE Question 18 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Power-driven vessels are not obliged to show a second masthead light if their length is less than: a. 100 meters c. 70 meters Question 19 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Draw below the lights of a fishing vessel making way. Question 20 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d A small vessel anchored in a bay is flying a blue and white swallow-tailed flag to indicate that the vessel: a. Is engaged in diving operations.
Is a local pilot tender. Requires assistance. Wishes to communicate with you.
Question 21 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d The arc on the horizon of a vessel’s stern light is 135 °. TRUE FALSE Question 22 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Draw below the day shapes of a NUC. Question 23 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Which method is used to indicate a partly submerged object being towed?
An all-round light at each end of the towed object b. A diamond shape on the towed object c.
All of the choices d. A searchlight from the towing vessel in the direction of the tow Question 24 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d The day shape for a vessel engaged in fishing is two cones, pointed ends together in a vertical line.
TRUE FALSE Question 25 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Another vessel approaching in sight, blasts rapidly five times to indicate: a. Altering my course to starboard b. Operating astern propulsion c. Altering my course to port d. What is your intention?
Question 26 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d A short blast indicates that the vessel: a. Is turning to starboard b. Intends to pass port to port c. Is holding course and speed d.
Will keep out of the way of the stand on vessel Question 27 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d Another vessel in sight in a narrow channel, sounds two prolonged blasts followed by a short blast to indicate: a. I intend to overtake you on your starboard side b. I agree to allow you to overtake me c. I intend to overtake you on your port side d. I am unclear of your intention? Question 28 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 1c, 1d What signal shall be used to indicate that a vessel is turning to port. Three long blasts of the whistle b.
Five short and rapid blasts of the whistle c. Two short blasts of the whistle d. One prolonged blast followed by three short blasts of the whistle Question 29 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 2b Another vessel displays a square flag below which is a ball to indicate. Not under command Question 30 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 2b A distress flare is coloured. Green Question 31 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 2b Three fixed red lights in a vertical line indicate. A vessel in distress b.
A vessel aground c. A coastal radio tower d. A vessel constrained by its draught Question 32 (1 Mark) Validates to TDMMF3207C element 3h & TDMMF4707B 2b You are required to assist vessels or persons displaying distress signals. TRUE FALSE Checked by: Approved by: Ranger Hope © 2008 (contains reworked material courtesy of ANTA).