Sheer Line

五月 23, 2012 at 10:07 | 張貼於Uncategorized | 發表留言
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Sheer line

The projection on to the plane of symmetry of the intersection of deck with the side, or the intersection of a deck with the plane of symmetry of a ship when the deck has no camber. The amount of rise of a sheer line above its lowest point is called the Sheer, forward or aft.

runningrigging

五月 20, 2012 at 09:49 | 張貼於Uncategorized | 發表留言
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runningrigging

Running Rigging of a Merchant Sailing Ship

Running Rigging of a Merchant Sailing Ship

1.Flying jib-guys.
2. Standing jib-guys.
3 . Spritsail lifts.
4 Spritsail braces.
5 Fore-yard tackles.
6 Main-yard tackles.
7 Fore-lifts.
8 Fore-braces.
9 Main-lifts.
10. Main-braces.
11. Cross-jack lifts.
12 Cross-jack braces.
13 Slings of fore-yard.
14 Slings of main-yard.
15 Slings of cross jack-yard.
16  Fore-top-sail-lifts.
17 braces.
1 8 reef-tackles.
19 Main-top-sail-lifts.
20 braces.
21 reef-tackles.
22 Mizen-top-sail-lifts.
23 Mizen-top-sail braces. –
24- Fore-top-gallant-lifts.
25  Fore-top-gallant-braces.
26 Fore-top-gallant-halliards.
27 Main-top-gallant-lifts.
28 Main-top-gallant braces.
29 Main-top-gallant halliards.
30 Top-gallant-lifts.
31 Top-gallant .braces.
32 Top-gallant halliards
33 Fore Royal Lifts.
34 Fore Royal braces
35 Fore-royal halliards.
36 Main-royal-lifts.
37 Main-royal braces.
38 Main-royal halliards.
39 Signal halliards.
40 Mizen-royal-lifts.
41 Mizen-royal- braces.
42 Mizen-royal-halliards.
43 Fore-top-sail tie and halliards.
44- Main-top-sail tie and halliards.
45 Mizen-top-sail tie and halliards.
46 Mizen-gaff peak halliards.
47 Mizen-gaff throat halliards.
48 Mizen-gaff -vang-pendants and falls.
49 Mizen-gaff signal halliards.
50 Spanker-boom topping-lift.
51 Spanker-boom quarter guys.
52 Spanker-boom sheet.
53 Spritsail-yard.
54- Fore-yard.
55 Main-yard.
56 Cross-jack-yard.
57 Fore-top-sail-yard.
58 Main-top-sail-yard.
59 Mizen-top-sail-yard.
60 Fore-top-gallant-yard.
61 Main-top-gallant-yard.
62 Mizen-top-gallant-yard.
63 Fore-royal-yard.
64- Main-royal-yard.
65 Mizen-royal-yard.
66 Spanker boom.
67 Spanker gaff.
Running Rigging of a Merchant Sailing Ship

1.Flying jib-guys.
2. Standing jib-guys.
3 . Spritsail lifts.
4 Spritsail braces.
5 Fore-yard tackles.
6 Main-yard tackles.
7 Fore-lifts.
8 Fore-braces.
9 Main-lifts.
10. Main-braces.
11. Cross-jack lifts.
12 Cross-jack braces.
13 Slings of fore-yard.
14 Slings of main-yard.
15 Slings of cross jack-yard.
16  Fore-top-sail-lifts.
17 braces.
1 8 reef-tackles.
19 Main-top-sail-lifts.
20 braces.
21 reef-tackles.
22 Mizen-top-sail-lifts.
23 Mizen-top-sail braces. –
24- Fore-top-gallant-lifts.
25  Fore-top-gallant-braces.
26 Fore-top-gallant-halliards.
27 Main-top-gallant-lifts.
28 Main-top-gallant braces.
29 Main-top-gallant halliards.
30 Top-gallant-lifts.
31 Top-gallant .braces.
32 Top-gallant halliards
33 Fore Royal Lifts.
34 Fore Royal braces
35 Fore-royal halliards.
36 Main-royal-lifts.
37 Main-royal braces.
38 Main-royal halliards.
39 Signal halliards.
40 Mizen-royal-lifts.
41 Mizen-royal- braces.
42 Mizen-royal-halliards.
43 Fore-top-sail tie and halliards.
44- Main-top-sail tie and halliards.
45 Mizen-top-sail tie and halliards.
46 Mizen-gaff peak halliards.
47 Mizen-gaff throat halliards.
48 Mizen-gaff -vang-pendants and falls.
49 Mizen-gaff signal halliards.
50 Spanker-boom topping-lift.
51 Spanker-boom quarter guys.
52 Spanker-boom sheet.
53 Spritsail-yard.
54- Fore-yard.
55 Main-yard.
56 Cross-jack-yard.
57 Fore-top-sail-yard.
58 Main-top-sail-yard.
59 Mizen-top-sail-yard.
60 Fore-top-gallant-yard.
61 Main-top-gallant-yard.
62 Mizen-top-gallant-yard.
63 Fore-royal-yard.
64- Main-royal-yard.
65 Mizen-royal-yard.
66 Spanker boom.
67 Spanker gaff.
Running Rigging of a Merchant Sailing Ship

1.Flying jib-guys.
2. Standing jib-guys.
3 . Spritsail lifts.
4 Spritsail braces.
5 Fore-yard tackles.
6 Main-yard tackles.
7 Fore-lifts.
8 Fore-braces.
9 Main-lifts.
10. Main-braces.
11. Cross-jack lifts.
12 Cross-jack braces.
13 Slings of fore-yard.
14 Slings of main-yard.
15 Slings of cross jack-yard.
16  Fore-top-sail-lifts.
17 braces.
1 8 reef-tackles.
19 Main-top-sail-lifts.
20 braces.
21 reef-tackles.
22 Mizen-top-sail-lifts.
23 Mizen-top-sail braces. –
24- Fore-top-gallant-lifts.
25  Fore-top-gallant-braces.
26 Fore-top-gallant-halliards.
27 Main-top-gallant-lifts.
28 Main-top-gallant braces.
29 Main-top-gallant halliards.
30 Top-gallant-lifts.
31 Top-gallant .braces.
32 Top-gallant halliards
33 Fore Royal Lifts.
34 Fore Royal braces
35 Fore-royal halliards.
36 Main-royal-lifts.
37 Main-royal braces.
38 Main-royal halliards.
39 Signal halliards.
40 Mizen-royal-lifts.
41 Mizen-royal- braces.
42 Mizen-royal-halliards.
43 Fore-top-sail tie and halliards.
44- Main-top-sail tie and halliards.
45 Mizen-top-sail tie and halliards.
46 Mizen-gaff peak halliards.
47 Mizen-gaff throat halliards.
48 Mizen-gaff -vang-pendants and falls.
49 Mizen-gaff signal halliards.
50 Spanker-boom topping-lift.
51 Spanker-boom quarter guys.
52 Spanker-boom sheet.
53 Spritsail-yard.
54- Fore-yard.
55 Main-yard.
56 Cross-jack-yard.
57 Fore-top-sail-yard.
58 Main-top-sail-yard.
59 Mizen-top-sail-yard.
60 Fore-top-gallant-yard.
61 Main-top-gallant-yard.
62 Mizen-top-gallant-yard.
63 Fore-royal-yard.
64- Main-royal-yard.
65 Mizen-royal-yard.
66 Spanker boom.
67 Spanker gaff.

Stix

三月 2, 2010 at 12:49 | 張貼於sail, sail boat, sailing | 發表留言
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Application for Inclusion of Notified Body Data on a Boat’s IRC Certificate The inclusion on a boat’s IRC certificate of ISO STIX, AVS and ISO Design Category is free of charge when applied for at the time of IRC initial application or annual revalidation. At any other time the appropriate fee for an amended certificate should be included. Data will be shown on a boat’s certificate as ISO STIX, AVS, and ISO Category. All of the information below must be provided. The RORC Rating Office will NOT accept and use incomplete data. Data shall clearly identify which model/version of a design it is applicable to. In cases of doubt, data will not be shown on IRC certificates until the doubt is resolved Data shall be supplied in a form and from a source which enables the RORC Rating Office to have confidence that it genuinely emanates originally from a Notified Body. Please also include copies of relevant Notified Body certificates.

Section A – Data Source of Information (Builder/Notified Body, etc): Pierre GAINZA (pierre@berret-racoupeau.com) Berret Racoupeau Yacht Design 3bis Avenue, des Amériques, 17000 La Rochelle France. Tel : +33 5 46 45 79 79

Boat design Type: Wauquiez Centurion

Model/Version: …45S

LOA: …13.72 m

Draft: …2.5m (standard deep draft lead keel)

Name of Notified Body: ICNN in france

Date of Assessment: 26th, Sept, 2002

Assessment Modules(s)used: ISO/FDIS 12217-2 : 2001 (F)

STIX: ………44.71

AVS: ………133.7 degree…………

Design Category: …A… Section B –

Declaration To be completed by the individual or organisation submitting the data above. I/we confirm that to the best of our knowledge the above information is correct. If any errors or omissions are found, I/we will promptly advise the RORC Rating Office. I enclose the appropriate fee (if applicable).

Application for Inclusion of Notified Body Data on a Boat’s IRC Certificate

二月 23, 2010 at 11:40 | 張貼於sailing | 發表留言
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Application for Inclusion of Notified Body Data on a Boat’s IRC Certificate

The inclusion on a boat’s IRC certificate of ISO STIX, AVS and ISO Design Category is free of charge when applied for at the time of IRC initial application or annual revalidation. At any other time the appropriate fee for an amended certificate should be included. Data will be shown on a boat’s certificate as ISO STIX, AVS, and ISO Category. All of the information below must be provided. The RORC Rating Office will NOT accept and use incomplete data. Data shall clearly identify which model/version of a design it is applicable to. In cases of doubt, data will not be shown on IRC certificates until the doubt is resolved Data shall be supplied in a form and from a source which enables the RORC Rating Office to have confidence that it genuinely emanates originally from a Notified Body. Please also include copies of relevant Notified Body certificates.

Section A –

Data Source of Information (Builder/Notified Body, etc): …Olivier Decamps Jebsen Marine, Jebsen & Co Ltd, Unit 5, G/F, Aberdeen Marina Tower, 8 Shum Wan Road, Aberdeen, HK & Sylvie Arramy Assistante, Berret Racoupeau Yacht Design , 3bis Avenue des Amériques , 17000 La Rochelle France ,sylvie@berret-racoupeau.com

Boat design Type: Wauquiez Centurion………………………………………………………..

Model/Version: …45S………………………………………………………..

LOA: …13.72 m………………………………………………………..

Draft: …2.5m (standard deep draft lead keel……………………………

Name of Notified Body: Hong Kong Sailing Federation……

Date of Assessment: …………………………………………………………..

Assessment Modules(s) used: …………………………………………………………..

STIX: ………44.71…………………………………………………..

AVS: ………133.7 degree…………………………………………………..

Design Category: …A………………………………………………………..

Section B – Declaration To be completed by the individual or organisation submitting the data above. I/we confirm that to the best of our knowledge the above information is correct. If any errors or omissions are found, I/we will promptly advise the RORC Rating Office. I enclose the appropriate fee (if applicable).

Boat design categories as defined by Institute Recreational Craft

二月 23, 2010 at 08:00 | 張貼於sail, sail boat, sailing | 發表留言
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Boat design categories as defined by Institute Recreational Craft:

Design Category
Wind Force
Beaufort Scale (knots)
Significant Wave Height
in meters (feet)
A – “Ocean" exceeding 8 (over 40 kts.) exceeding 4 (over 13 ft.)
B – “Offshore" up to and including 8 (34-40 kts.) up to and including 4 (13 ft.)
C – “Inshore" up to and including 6 (22-27 kts.) up to and including 2 (6.5 ft.)
D – “Sheltered waters" up to and including 4 (11-16 kts.) up to and including 0.5 (1.5 ft.)
A. OCEAN: Designed for extended voyages where conditions may exceed wind force 8 (Beaufort scale) and significant wave heights of 4 meters and above, and vessels largely self-sufficient.

Syllabus for Pleasure Vessel Operator Grade 2 Examination

八月 1, 2009 at 21:34 | 張貼於sailing | 發表留言
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http://www.mardep.gov.hk/en/pub_services/pdf/examrules_ploc.pdf

Part B : Engineering Knowledge (15) Engines – Construction and functions of Internal Combustion Engines, Pre-start inspection, starting and stopping sequences (a) Construction and functions of various components of engines (petrol and diesel). (b) A knowledge of the pre-start inspection/check of the following items: (i) Unrestricted movement of engine, shafting and propeller. (ii) Integrity of engine and propeller mounting (outboard). (iii) Fuel oil system and quantity of fuel for intended voyage. (iv) Quantity of lubricating oils: a. crankcase and gearbox (inboard) b. gearcase (outboard) (v) Proportion of fuel and lubricating oil (outboard) (vi) Cooling system and quantity of coolant. (vii) Functional test of engine/gearbox control system. (viii) Functional test of steering gear/mechanism. (c) Starting procedures. (d) Effect of repeated/prolonged starting. (e) An understanding of the need for warming up and cooling down and the procedures to follow. (f) Stopping procedures. (g) Procedures for securing the machinery spaces. (16) Duties while underway (a) Monitoring of engine performance by (i) RPM (ii) coolant temperature/flow. (iii) lubricating oil pressure. (iv) lubricating oil temperature. – 21 – (v) exhaust temperature. (vi) exhaust condition. (vii) engine noise/vibration. (b) Monitoring of stern gland condition and bilge level in machinery space. (c) Machinery space ventilation. (17) Batteries and electrical equipment (a) Batteries (i) verify charging condition of batteries. (ii) replenishing electrolyte in batteries. (iii) the importance of ventilation of battery lockers. (iv) charging current and indication. (b) brief outline of simple switchboard and its instrumentation. (c) the function, types and rating of fuses, their routine checks and actions in event of blown fuse. (d) the hazards of and actions in event of electric shock. (18) Trouble shooting and remedies at sea (a) difficulties in starting engine. (b) engine stop when underway. (c) engine speed fluctuation. (d) excessive engine vibration. (e) excessive turbo charger vibration. (f) abnormal smoke from exhaust. (g) high lubricating oil temperature. (h) high coolant temperature (inboard) and/or low/no coolant flow (outboard). (i) high exhaust temperature. – 22 – (j) difficulties in engaging/disengaging gear. (k) engine fails to stop. (l) deteriorating bilge pumping efficiency. (19) Maintenance (a) Appreciation of maintenance schedules recommended by shipbuilder and engine manufacturer. (b) A knowledge of the importance of : (i) cleaning/replacement of air, fuel and lube oil filters and sea suction strainers. (ii) replacement of lubricating oils. (iii) cleaning/inspection of cooling and exhaust system. (iv) checking of belt drives. (20) Safe operation of deck equipment (21) Fire fighting and fire prevention (a) fire hazard of petrol and diesel fuel. (b) types of fire and appropriate fire fighting medium. (c) types of portable fire extinguishers, their operation and maintenance (d) practical fire fighting techniques. (e) LPG installation and associated hazards. (f) safe fuel storage and isolation of fuel supply in case of fire. (g) actions to be taken in event of fuel leak. (h) precautions when taking fuel on board.

life at the extreme

五月 27, 2008 at 00:02 | 張貼於sailing, video | 發表留言
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Pirate of Carribean

五月 26, 2008 at 23:24 | 張貼於video | 發表留言
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Keel Lift- a misnomer

九月 22, 2007 at 12:28 | 張貼於physics, sail | 發表留言
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Catamaran VEGA Sailing School Chapter 11: “Water flowing past the hull, keel, and rudder of a sailboat is subject to the same basic rules as air flowing past the sails. The only difference between the sails and underwater appendages is that the latter are symmetrical while the former are asymmetrical. But the angle of attack (which we call ‘angle of incidence’ for wind hitting the sails and ‘yaw angle’ for water hitting the keel) solves the problem of getting ‘lift’ from the keel. Due to the pressure of the wind in the sails, a sailboat sideslips a little as it goes forward. This is called ‘making leeway.’ Thus the angle between the direction that the boat is heading and an imaginary line indicating its ‘track’ through the water is the ‘leeway angle’ as shown in Figure 1. Since the water has to travel a greater distance on the windward side of the keel, an area of reduced pressure produces ‘lift’ to windward. The more lift from the underwater surfaces, the less leeway the boat makes. In other words, it slips sideways less. Obviously, when sailing to windward we are trying to reach a destination upwind, and any sideslipping that pushes us downwind is undesirable. The slower the velocity of the fluid flowing past the ‘airfoil,’ the less efficiency it has as a lifting surface. So when the boat is going slowly, it sideslips more. This increases the leeway angle and, up to a point, increases the efficiency of the keel. Past that point, though, the water becomes turbulent on the windward side of the keel and a stall results. A good example of this situation is a sailboat sitting on the starting line before a race in a close-hauled pointing angle but with sails luffing, waiting for the starting gun. At the gun, the crew trims in the sails to get the boat moving forward. Instead, the boat goes almost as fast sideways as she goes forward because the velocity of the water flowing past the keel is not sufficient to counteract the sideways push of the sails. Instead, the helmsman should have sailed on a slight reach, where the force of the sails is more in the direction of the boat’s heading, in order to pick up speed and then harden up to close-hauled.


Fig 1: The more lift generated on the keel, the less leeway, or sideslipping.

All the above should not be taken seriously because the force come form the wind above. Below water only drag can be found, not lift.

 


Wind Tunnel movies

九月 9, 2007 at 15:41 | 張貼於Uncategorized | 發表留言
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WB-Sails Ltd: Good windtunnel movies showing seperation. Both the jib and the mail should be eased out to rettach the airflow

http://www.wb-sails.fi/news/99_4_WindTunnelMovies/Movies.htm#

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