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(continued) 17.9 13.6 9.9 6.6 3.7 2.0
380..................................... 38.0 31.1 25.3 20.2 15.7 11.8 8.3 5.2 2.4
390..................................... 41.3 34.1 27.9 22.6 17.9 13.8 10.1 6.8 3.8
400..................................... 44.8 37.2 30.7 25.0 20.1 15.8 11.9 8.4 5.3
410..................................... 48.2 40.3 33.5 27.7 22.6 18.1 14.0 10.4 7.2
420..................................... 51.5 43.4 36.4 30.4 25.2 20.6 16.4 12.7 9.7
430..................................... 54.8 46.5 39.4 33.3 27.9 23.2 19.0 15.2 11.8
440..................................... 58.4 49.9 42.6 36.4 30.9 26.0 21.7 17.8 14.4
450..................................... 62.1 53.4 46.0 39.6 33.9 29.0 24.6 20.6 17.1
460..................................... 65.9 57.0 49.5 42.9 37.1 32.1 27.6 23.5 19.9
470..................................... 69.8 60.7 53.0 46.3 40.4 35.2 30.6 26.5 22.8
480..................................... 73.7 64.4 56.5 49.7 43.7 38.4 33.7 29.5 25.7
490..................................... 77.5 68.1 60.0 53.0 46.9 41.5 36.7 32.4 28.5
500..................................... 81.2 71.6 63.4 56.2 50.0 44.5 39.6 35.2 31.2
510..................................... 84.9 75.1 66.7 59.4 53.0 47.4 42.4 37.9 33.9
520..................................... 88.4 78.4 69.9 62.4 55.9 50.2 45.1 40.5 36.4
530..................................... 91.8 81.6 72.9 65.3 58.7 52.9 47.7 43.0 38.8
540..................................... 95.2 84.8 75.9 68.1 61.4 55.5 50.2 45.4 41.2
550..................................... 98.4 87.8 78.8 70.9 64.0 58.0 52.6 47.8 43.4
560..................................... 101.6 90.8 81.6 73.6 66.6 60.5 55.0 50.1 45.6
570..................................... 104.8 93.8 84.4 76.3 69.2 62.9 57.3 52.3 47.8
580..................................... 107.9 96.8 87.2 78.9 71.7 65.3 59.6 54.5 49.9
590..................................... 111.0 99.7 90.0 81.5 74.2 67.7 61.9 56.7 52.0
600..................................... 114.0 102.5 92.6 84.0 76.5 69.9 64.0 58.8 54.0
610..................................... 117.0 105.3 95.2 86.5 78.9 72.1 66.2 60.8 56.0
620..................................... 120.0 108.0 97.8 88.9 81.2 74.4 68.3 62.8 58.0
630..................................... 122.9 110.7 100.4 91.3 83.5 76.6 70.4 64.8 59.9
640..................................... 125.7 113.4 102.9 93.7 85.8 78.7 72.4 66.8 61.7
650..................................... 128.6 116.1 105.4 96.1 88.0 80.8 74.4 68.7 63.6
660..................................... 131.4 118.7 107.8 98.3 90.1 82.8 76.3 70.6 65.3
670..................................... 134.2 121.2 110.2 100.6 92.2 84.8 78.3 72.4 67.1
680..................................... 136.9 123.8 112.8 102.9 94.3 86.8 80.2 74.2 68.9
690..................................... 139.6 126.3 115.0 105.1 96.4 88.8 82.1 76.0 70.6
700..................................... 142.3 128.8 117.3 107.3 98.5 90.8 83.9 77.8 72.3
710..................................... 144.9 131.3 119.6 109.4 100.5 92.7 85.7 79.5 73.9
720..................................... 147.5 133.7 121.8 111.5 102.5 94.6 87.5 81.2 75.5
730..................................... 150.1 136.1 124.0 113.6 104.5 96.5 89.3 82.9 77.1
740..................................... 152.7 138.5 126.2 115.7 106.5 98.3 91.5 84.5 78.7
750..................................... 155.3 140.8 128.5 117.8 108.4 100.1 92,8 86.1 80.3
760..................................... 157.8 143.1 130.6 119.7 110.3 101.9 94.4 87.8 81.7
770..................................... 160.2 145.4 132.7 121.7 112.1 103.6 96.0 89.3 83.2
780..................................... 162.6 147.6 134.8 123.7 113.9 105.3 97.6 90.8 84.7
790..................................... 165.1 149.9 136.9 125.6 115.7 107.0 99.2 92.3 86.1
800..................................... 167.5 152.1 138.9 127.4 117.4 108.6 100.8 93.8 87.4
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L=the length in feet of the line of the second deck at the centerline of the vessel from the inner surface of
the frames at the vessel's stem to the inner surface of the frames at the vessel's stern.
D=The vertical distance in feet from the top of the flat keel of the vessel to the line of the second deck.
EXAMPLE (1) For a vessel in which L=450 feet and L/D=15 feet, read down from the L/D column ``15'' and to the
right on the column ``450'' to where the two columns intersect at 39.6. The tonnage mark must be located 39.6
inches below the line of the second deck.
EXAMPLE (2) If L or L/D is an intermediate number, the distance ``a'' between the tonnage mark and the line of
the second deck must be obtained by linear interpolation. For a vessel in which L=424.80 feet and L/D=15.17:
------------------------------------------------------------------------
Table L/ Actual L/ Table L/
L D=15 D=15.17 D=16
------------------------------------------------------------------------
Table 420.............................. 30.4 ......... 25.2
Actual 424.80.......................... r a s
Table 430.............................. 33.3 ......... 27.9
------------------------------------------------------------------------
Interpolation:
r=30.4+0.48 (33.3-30.4)=31.79
s=25.2+0.48 (27.9-25.2)=26.50
a=r-0.17 (r-s)=31.79-0.17 (31.79-26.50)=30.89 inches
(6) For the following vessels with a load line mark, the upper edge of the tonnage mark must be located at the level of the uppermost part of the load line grid:
(i) Vessels assigned only one gross and one net tonnage under §69.175(c).
(ii) Vessels for which a load line assigning authority certifies that the vessel's load line mark was located as though the second deck were the freeboard deck.
(b) Line for fresh and tropical waters. (1) Except as under paragraph (b)(4) of this section, a horizontal line for fresh and tropical waters may be assigned at the vessel owner's request.
(2) The line must be nine inches long and one inch wide and located above and to the left of the tonnage mark at a distance equal to one forty-eighth of the distance from the top of the flat keel to the tonnage mark. The tonnage mark and the line for fresh and tropical waters must be connected by a vertical line one inch wide. (See the figure in §69.183(a).)
(3) The line for fresh and tropical waters must be designated by a welded bead or other permanent mark nine inches long placed along the upper edge of the line.
(4) For vessels with a load line mark, if the load line assigning authority certifies that the load line mark was located as though the second deck were the freeboard deck, a line for fresh and tropical waters must not be placed on the vessel.
(c) Freeboard deck mark. A vessel assigned two gross and two net tonnages which has more than one deck and no load line mark assigned must have a mark on each side of the vessel with the same dimensions and location as the freeboard deck line mark under §42.13–20 of this chapter, except that the mark must be located directly above the tonnage mark.
(d) The line of the second deck. The line of the second deck must not be marked on the side of the vessel.
(e) Color of markings. All markings under this section must be maintained in either a light color on a dark background or a dark color on a light background.
§ 69.179 Certification of markings.
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(a) Before a certificate of measurement is issued for a vessel requiring a tonnage mark, a certification by a measurement organization under §69.15 that all markings meet the requirements of this subpart is required.
(b) The Coast Guard, at any time, may verify markings under this subpart.
§ 69.181 Locating the line of the second deck.
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(a) If the second deck is not stepped, the line of the second deck is the longitudinal line of the underside of the second deck at the side of the hull.
(b) If the second deck is stepped (as in the examples following this paragraph), the line of the second deck is a longitudinal line extended parallel to each portion of the second deck and located at the height of the underside of the amidships portion of the second deck at the side of the hull—
(1) Plus, for each stepped portion of the second deck higher than the second deck at amidships, a distance equal to the length of the stepped portion divided by the total length of the second deck times the height that the step is above the height of the amidship portion of the second deck; and
(2) Minus, for each stepped portion of the second deck lower than the second deck at amidships, a distance equal to the length of the stepped portion divided by the total length of the second deck times the height that the amidship portion of the second deck is above the height of the step.
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§ 69.183 Figures.
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(a) Tonnage mark with an equilateral triangle and a line for fresh and tropical waters.
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W= 1/48 of the distance from the top of the flat keel to the tonnage mark. (See §69.177(b)(2).)
(b) Tonnage mark location if the load line mark is not placed as though the second deck were the freeboard deck.
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k=a distance between 21 inches and six feet six inches.
a=distance derived from Table 69.177(a)(5).
(c)—Tonnage mark location if the load line mark is placed as though the second deck were the freeboard deck.
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k=a distance between 21 inches and six feet six inches.
a=the distance between the line of the second deck and the uppermost part of the load line grid.
Subpart E—Simplified Measurement System
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§ 69.201 Purpose.
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This subpart prescribes the procedures for measuring a vessel under the Simplified Measurement System described in 46 U.S.C. chapter 145, subchapter III.
§ 69.203 Definitions.
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As used in this subpart and in Coast Guard Form CG–5397 under §69.205—
Overall breadth means the horizontal distance taken at the widest part of the hull, excluding rub rails, from the outboard side of the skin (outside planking or plating) on one side of the hull to the outboard side of the skin on the other side of the hull.
Overall depth means the vertical distance taken at or near midships from a line drawn horizontally through the uppermost edges of the skin (outside planking or plating) at the sides of the hull (excluding the cap rail, trunks, cabins, and deckhouses) to the outboard face of the bottom skin of the hull, excluding the keel. For a vessel that is designed for sailing and has a keel faired to the hull, the keel is included in “overall depth” if the distance to the bottom skin of the hull cannot be determined reasonably.
Overall length means the horizontal distance between the outboard side of the foremost part of the stem and the outboard side of the aftermost part of the stern, excluding rudders, outboard motor brackets, and other similar fittings and attachments.
Registered breadth means—
(a) For a single-hull vessel, the vessel's overall breadth; and
(b) For a multi-hull vessel, the horizontal distance taken at the widest part of the complete vessel between the outboard side of the skin (outside planking or plating) on the outboardmost side of one of the outboardmost hulls to the outboard side of the skin on the outboardmost side of the other outboardmost hull, excluding rubrails.
Registered depth means—
(a) For a single-hull vessel, the vessel's overall depth; and
(b) For a multi-hull vessel, the overall depth of the deepest hull.
Registered length means—
(a) For a single-hull vessel, the vessel's overall length; and
(b) For a multi-hull vessel, the horizontal distance between the outboard side of the foremost part of the stem of the foremost hull and the outboard side of the aftermost part of the stern of the aftermost hull, excluding fittings or attachments.
Vessel designed for sailing means a vessel which has the fine lines of a sailing craft and is capable of being propelled by sail, whether or not the vessel is equipped with an auxiliary motor, a decorative sail, or a sail designed only to steady the vessel.
[CGD 87–015b, 54 FR 37657, Sept. 12, 1989; 54 FR 40240, Sept. 29, 1989; USCG–1999–6216, 64 FR 53225, Oct. 1, 1999]
§ 69.205 Application for measurement services.
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To apply for measurement under the Simplified Measurement System, the owner of the vessel must complete either an Application for Simplified Measurement (form CG–5397), or a Builder's Certification and First Transfer of Title (form CG–1261) which has the information in Part III “Dimensions” completed, and submit it to the National Vessel Documentation Center.
[CGD 95–014, 60 FR 31606, June 15, 1995]
§ 69.207 Measurements.
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(a) All lengths and depths must be measured in a vertical plane at centerline and breadths must be measured in a line at right angles to that plane. All dimensions must be expressed in feet and inches to the nearest half inch or in feet and tenths of a foot to the nearest .05 of a foot.
(b) For a multi-hull vessel, each hull must be measured separately for overall length, breadth, and depth and the vessel as a whole must be measured for registered length, breadth, and depth.
(c) The Coast Guard may verify dimensions of vessels measured under this subpart.
§ 69.209 Calculation of tonnages.
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(a) Gross tonnage. (1) Except as in paragraphs (a)(2) through (a)(5) of this section, the gross tonnage of a vessel designed for sailing is one-half of the product of its overall length, overall breadth, and overall depth (LBD) divided by one hundred (i.e., 0.50 LBD/100), and the gross tonnage of a vessel not designed for sailing is 0.67 LBD/100.
(2) The gross tonnage of a vessel with a hull that approximates in shape a rectangular geometric solid (barge-shape) is 0.84 LBD/100.
(3) The gross tonnage of a multi-hull vessel is the sum of all the hulls as calculated under this section.
(4) If the volume of the principal deck structure of a vessel is as large as, or larger than, the volume of the vessel's hull, the volume of the principal deck structure in tons of 100 cubic feet is added to the tonnage of the hull to establish the vessel's gross tonnage. The volume of the principal deck structure of a vessel is determined by the product of its average dimensions.
(5) If the overall depth of a vessel designed for sailing includes the keel, only 75 percent of that depth is used for gross tonnage calculations.
(b) Net tonnage. (1) For a vessel having propelling machinery in its hull—
(i) The net tonnage is 90 percent of its gross tonnage, if it is a vessel designed for sailing; or
(ii) The net tonnage is 80 percent of its gross tonnage, if it is not a vessel designed for sailing.
(2) For a vessel having no propelling machinery in its hull, the net tonnage is the same as its gross tonnage.
[CGD 87–015b, 54 FR 37657, Sept. 12, 1989, as amended by CGD 97–057, 62 FR 51045, Sept. 30, 1997]