1、AMERICAN BUREAU OF SHIPPING GUIDANCE FOR PREPARING FISHING VESSELS STABILITY BOOWT 1990 ABS TITLE*PFVSB yo m OLLLOZ 01103bo3 AMERICAN BUREAU OF SHIPPING GUIDANCE FOR PREPARING FISHING VESSELS STABILITY BOOKLET 1990 American Bureau of Shipping Incorporated by Act of the Legislature of and State of Ne
2、w York1862 Copyrighfi90 American Bureau of Shipping 45 Eisenhower Drive P.O. Box 910 Paramus, New Jersey 076534910, U.SA CONTENTS STABILITY BOOKLET FORMATS FOR FISHING VESSELS In response to the needs of the industry, the Bureau has prepared STABILITY BOOKLET formats for use by masters and operating
3、 personnel of fishing vessels. These formats, together with instructions for the preparation of the stability Booklets were developed for two separate vessel lengths and are presented in four parts as follows: PART 1: Page 1.1 Guidelines for the Preparation of the Stability Booklets for Fishing Vess
4、els with a Length Equal to or Greater than 45 Meters. PART 2: Page 2.1 Format of the Stability Booklets for Fishing Vessels with a Length Equal to or Greater than 45 Meters. PART 3: Page 3.1 Guidelines for the Preparation of the Stability Booklets for Fishing Vessels with a Length of Less than 45 Me
5、ters. PART4 Page 4.1 Format of the Stability Booklets for Fishing Vessels with a Length of Less than 45 Meters. PART 1 GUIDELINES FOR THE PREPARATION OF STABILITY BOOKLETS FOR FISHING VESSELS WITH A LENGTH EQUAL TO OR GREATER THAN 45 METERS ABS TITLE*PFVSB 90 W ObSL3JOZ O003bOb 395 W GUIDELINES FOR
6、THE PREPARATION OF STABIfdTY BOOWS F O FISHING VESSELS WITN A LENGTH , 45 M. These guidelines are to be read in conjunction with PART 2, llSTABILITY BOOKLET FORMATI! for Fishing Vessels. These guidelines and the Stability Booklet format of Part 2 are intended for fishing vessels of 45 meters (148 fe
7、et) in length and over. The stability criteria for these vessels are stated in Section 17 of the ABS Guide for Building and Classing Fishing Vessels. For fishing vessels of less than 45 meters in length, see Parts 3 and 4 respectively. The division in length at 45 meters is necessary to account for
8、the more detailed instructions that should be provided to Masters of larger fishing vessels, such as the step by step instructions to calculate loading conditions other than the standard ones. Items 1 to 5 inclusive of the Stability Booklet format, list items to be included, and give instructions on
9、 how to present these items. Also in the Stability Booklet format any words in brackets indicate where specific information/instruction is to be provided. Use and selection of units are to be consistent and uniform. “Metric TonsIl to indicate tons of 1000 kg, and %eng TonsIl to indicate tons of 2240
10、 lbs are to be used. Also the values should be given in decimal form instead of fractions. The maximum permissible draft at amidships, Item 1.8, and its corresponding minimum freeboard, Item 1.9, are to be indicated on both sides of the vessel, amidships, with a mark as specified in paragraph 17.9.1
11、2 of our “Guide for Building and Classing Fishing Vesselsf1, 1990 and later editions. In Items 2.2.3, 3.3.3, 4.2, and 6.2 the LCG and LCB are referenced from the forward perpendicular. If the after perpendicular is used as a reference point, then the bracketed words are to be corrected accordingly.
12、Some shipyards are using amidships as a reference point; For fishing vessels, however, this practice should be avoided, if possible, because of the plus/minus sign associated with it. In Item 2.3 if permanent ballast is installed, instructions are to be given stating that the ballast is not to be re
13、moved without prior approval by ABS. Guidance for Item 2.5 is provided by paragraph 17.9.9 of our l#Gui.de for Building and Classing Fishing Vescels1l, and for Item 2.6 by paragraph 17.9.10. The ice is to be assumed uniformly distributed, horizontally on decks and vertically - 1.2 - - ABS TITLE*PFVS
14、B 90 M Ob5LL02 0003607 221 M on vertical surfaces. 9) In Item 3.1 after the number of trim lines is established, the values should be rounded off to the nearest 100 mm (6 inches). The number of trim lines may be reduced further per Item 5.3. 10) For Items 3.1, 3.2, and 4.2 explanations with examples
15、 are to be provided for proper interpolation of in-between values. 11) In the Instructions to the Master, Item 6, a few warnings have been provided. Additional warnings should be provided wherever deemed appropriate. The publications mentioned in Item 6.11, contain lists of useful instructions; depe
16、nding on the fishing vessel type, additional relevant cautions/warnings may be included in the Instructions to the Master. It is imperative for the Master to know the limitations of his vessel, therefore, the instructions to him should state clearly these limits and the hazards involved when exceedi
17、ng them. 12) In the Standard Loading Conditions, Item 7, the following are to be observed: (a) All tanks containing consumable liquids are assumed to have full free surface effects, even in the departure condition, unless the tank is completely empty, or a specific order of consumption is given in t
18、he Instructions to the Master and some tanks are still completely full at the particular phase of the fishing operation. (b) In the loading condition of Item 7.3, “Hold half full with full deck cargo“, deck cargo is to be assumed only if the vessel has provisions for carrying deck cargo, or stowing
19、such cargo temporarily before transferring it to the hold. (c) Loading condition of Item 7.8 is to show the vessel in the worst possible anticipated loading condition with regard to stability. 13) In preparing the loading conditions calculation sheets, the following are to be noted: (a) On the first
20、 page under the heading, the blank brackets are to be replaced with the appropriate units, and the one for the perpendicular with the word Forward or Aft. (b) If permanent ballast has been/will be installed, the light ship item should read: “Light ship (including permanent ballast)“. (c) The other l
21、ines should be adjusted to correspond to the type of fishing vessel, and actual arrangement of tanks and cargo spaces. If the vessel has diesel engines, “Diesel Oil Tank # II in lieu of “Fuel Oil Tank # II is to be substituted. (d) On the second page of the calculation sheet, pictorial - 1.3 - ABS T
22、ITLE*PFVSB 90 m Ob51iL02 0003bO lib m drawings showing, in profile and plan views, the distribution of consunables and cargo per Item 4.1, are to be provided. All loading conditions are to have positive stability margin on the respective line (14) of the second page of the calculation sheet. It is s
23、tressed here that since the Master will estimate the weight of the fish cargo with obviously a wide margin of accuracy, it is more important to provide safe margins through the various steps of the stability presentation, taking these elements into consideration. In all loading conditions the last l
24、ine on the second page of the calculation sheet, “Reduction in Stability Margin due to water on deck“, is to be filled-in, and then a comparison should be made with the Stability Margin (14), indicating to the Master the resulting reduction in the stability margin and freeboard and the importance of
25、 keeping the freeing ports unobstructed. See also Item 6.9. In step 8.4 of the Instructions for Calculating Loading Conditions, the Master is instructed to distribute the fish cargo into the various compartments where fish is stowed. It is realized that the estimation of the amount of fish cargo, st
26、owed on board while fishing at sea, can not be very accurate. Possibly for this reason, existing instructions to fishing vessel Masters are usually silent on this issue. However, in order to provide meaningful loading instructions to Masters, the calculation of the weight of the fish cargo, caught a
27、t sea, should be addressed. The most common and fairly accurate way of calculating DWT for any vesael is the direct reading of the draft marks: for larger vessels, at sea, this can be substituted by the taking of freeboard readincrs. Both of these methods remiro calmer seas. A third Way to calculate
28、 this weight is by looking into the fish holds, and estimating the level of fullness of the hold and the density of the cargo. Because of the above, the designer/shipyard is to chose the method that is most appropriate to vessels trade, area of operation, and standard practice in that region. If the
29、 taking of freeboard readings is decided, the following should be inserted in the instructions to the Master, Item 6.3: - When taking fore and ait freeboard readings to determine trim, always convert them to draft marks first. Do not use the difference of the fore and aft freeboard readings to detem
30、ine trim. The taking of freeboard readings at sea can sometimes be difficult. The following suggestions may help in obtaining more accurate readings: - 1.4 - - ABS TITLE*PFVSB 90 Ob51102 0003609 OT4 .1 Do not take port or starboard readings if the vessel rolls. Change heading first so that the vesse
31、l remains steady in an upright position. .2 If there is swell take readings at the bottom and top (trough and crest) of the wave and then average them. .3 Do not take fore and aft readings if the vessel pitches. Change heading first so that the vessel remains steady in the fore-aft direction. .4 Alw
32、ays take more than three readings at each station, so that the average would be a close approximation of the actual value. Warnins! If you have to approximate, always be on the conservative side by recording the smaller value of freeboard readings. Also, after the mean amidships draft is determined,
33、 instructions should be provided on how to calculate the weight of the fish cargo using the Displacement and the sub- total on the first page of the calculation sheet. For guidance, see step 8.12 of the Instructions for Loading Conditions. 15) In step 8.10 of the Instructions for Calculating Loading
34、 Conditions, if the vessells corrected VCG exceeds the maximum allowable, the Master is instructed to take immediate corrective action to lower the vessels VCG by ballasting empty tanks. If due to vesseltc design, however, there are no empty ballast tanks, then proper instructions are to be provided
35、 for lowering the vessells VCG. 16) When preparing the first page of the blank forms, Item 9, on the first three lines, “Light ship, “Crew and Effectsll, and “Equipment on deckt1, all of their respective values should be inserted. On the next two lines IIConsumables on deckt1 (if applicable), “Store
36、s i Sparestg, as well as on !#Deck cargot1 and “Water ballastf1, their respective VCGIs should be inserted; and on every applicable line of column (4), the LCG should be inserted. Several copies of the blank forms should be attached at the end of the Stability Booklet for the Masters use. - 1.5 - -
37、_ - ABS TITLE*PFVSB 90 Ob53302 0003bLO BLb PART 2 STABILITY BOOKLET FOR THE FISHING VESSEL 1 NAME 1 FORMAT FOR VESSELS WITH A LENGTH 2 45 METERS ABS TITLE*PFVSB 90 IU Ob51102 0003b11 752 1. 2. 3. 4. 5. 6. 7. 8. 9. INDEX Page Principal Dimensions and Particulars Light ship Characteristics and othor W
38、eights Tables of Hydrostatics Volumes and Centers of Volumes Maximum Allowable VCG versus Draft Curves Instructions to the Master Standard Loading Conditions: Departure from port Arrival at fishing grounds Hold half full with full deck cargo and 50% Consumables Departure from fishing grounds with fu
39、ll catch and 20% consumables Arrival in port with full catch and 10% consunables Arrival in port with 20% of full catch and 10% consumables Same as .4 above with icing (if applicabla duo vessel 1 s area of operation) Any other adverse condition peculiar to vessel tme Instructions for Calculating Loa
40、ding Conditions Differing from the Standard Ones 3 4 5 6 7 8 15 15 17 19 21 23 25 to 27 s 29 31 34 Blank Forms - 2.2 - .a 09 . 10 . 11 . 12 13 . 14 -_ - - ABS TITLEgPFVSB i0 m 0653302 0003632 699 W 1. PRINCIPAL DIMENSIONS AND PARTICULARS Ships Name Type of Ship .go trawler, seiner, dredger, longline
41、r, etc) Name of Builder and Hull Number Date of Build/Conversion Particulars of Classification Nationality, Port of Registry and Official Number Principal Dimensions: .1 Length overall (LA) .2 Length between perpendiculars (LBP) .3 Beam (extreme) .4 Depth (extreme) to weather deck Maximum permissibl
42、e bottom of the keel. draft at amidships measured from the The minimum freeboard corresponding to sub-item .8 above. Displacement in salt water at the maximum draft (.8 above). The minimum recommended draft at the forward and aft draft marks for any sailing condition (if applicable). The minimum per
43、missible freeboard at the stem and stern (if applicable) . other applicable restriction on draft and trim. General arrangement plans showing watertight compartments, closures, vents, downflooding angles, etc. - 2.3 - 01 .2 -3 04 .5 06 ABS TITLE*PFVSB 70 W Ob51iLOi! OOQ3b13 525 Date and place of incl
44、ining experiment or DWT survey, and who conducted it. Light ship characteristics: .1 Weight .2 Vertical center of gravity above keel (VCG) .3. Longitudinal center of gravity aft of fwd perpendicular (LCG) If permanent ballast is installed, it the light ship characteristics, and ballast is to be indi
45、cated, giving weight and location. should be included in a description of such the material, and its Constant and other weights and their centers of mass: .1 Crew and their effects .2 Equipment on deck (e.g. nets, traps, pots, skiffs, .3 Hanging loads (e.g. fishing gear, etc) -4 Deck cargoes (e.g. f
46、ish, crab, lobster, etc) .5 Consuonables stored on deck .6 Any other weight on board, not considered part of light ship The weight and increase in VCG due to ice accumulation covering the whole ship is to be provided in a table as a function of amidships draft, measured from the bottom of the keel.
47、portable pumps, etc) The weight and increase in VCG due to water entrapment on decks of vessels with bulwarks, regardless of having freeing ports, is to be provided in a table as a function of amidships draft, measured from the bottom of the keel. - 2.4 - - ABS TITLE*PFVSB 90 0651102 0003614 461 M .
48、1 Tables of following .1 even 3. TABUS OF HYDROSTATICS hydrostatic particulars are to be provided trim lines: keel (zero trim) .2 at 0.04L trim by the stern .3 at any possible loading condition producing a excess of 0.02L trim forward, or 0.06L trim-aft. for the trim in See also Item 5.3. .2 The hyd
49、rostatic particulars are to be tabulated to a base of amidships draft, measured from the bottom of the keel (ax), over a range covering the light ship and maximum drafts, with an increment in draft of 100 mm (6 inches). .3 The hydrostatic particulars should include: .1 extreme displacement (with appendages) in .2 .3 longitudinal center of buoyancy LCB (from water at stated density moment to change trim one unit perpendicular) . salt - 2.5 - ABS TITLESPFVSB 70 W Ob5LLOZ 0003bL5 3T8 4. VOLUMES AND C- OF VOL- .1 Scaled drawings in profile and plan views are to
