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(b) If the second deck is stepped, an equivalent length (L) shall be measured along an equivalent of the molded line parallel to the second deck and passing through the upper terminal of the depth (Ds). (See fig. 57.) § 2.94 Figures in the tonnage mark

table. (a) The figures in the tonnage mark table in $ 2.95 show the minimum distance from the molded line of the second deck or, if the deck is stepped from the equivalent of the molded line as set out in $ 2.93(b), to the upper edge of the tonnage mark.

(b) The tonnage mark table is given for the whole number ratios Lt/D. from 12 to 20, where D. and Lare the depth and length as set out in $ $ 2.92 and 2.93 and for lengths up to 800 feet at intervals of 10 feet.

(c) For intermediate lengths and L/D, ratios, the corresponding distances shall be obtained by linear interpolation. For other cases the distances shall be obtained by extrapolation.

S

a=Distance from the molded line of second

deck to upper edge of tonnage mark. d=Molded draft to upper edge of tonnage

mark. e=Freeboard from loadline certificate. h=Molded draft to loadline. k=Distance from centerline of loadline disk

to apex of triangle on tonnage mark. m=Distance from deck line to tonnage mark. t=Distance from molded line of second deck

to deck line for freeboard. $ 2.92 Depth (DS) used with the tonnage

mark table. (a) The depth (DE) to be used with the tonnage mark table in § 2.95 shall be the molded depth to the second deck.

(b) If the second deck is stepped, an equivalent depth shall be used. (See fig. 57.)

(1) If the higher portion of the deck is less than one-half the total length (L) of both portions, the depth for the table (D) shall be the molded depth amidships (D) increased by the ratio of the length of the shorter portion (I) to the total length (L) times the height of the step (b).

I (D=D+-b in the upper example in

L

fig. 57.) (2) If the lower portion of the deck is less than one-half the total length (L) of both portions, the depth for the table (D) shall be the molded depth amidships (D) decreased by the ratio of the length of the shorter portion (I) to the total length (L) times the height of the step (b).

I (D =D--b in the lower example in

L

fig. 57.) § 2.93 Length (L) used in the tonnage

mark table. (a) The length (L/) as used in the tonnage mark table shall be the distance on the second deck between two points, of which the foremost is the point where the underside of that deck or the line thereof at the stem, meets the inner surface of the ceiling, sparring or frames, and the aftermost is the point where the underside of that deck, or the line thereof, meets the inner surface of the ceiling, sparring or frames in the middle plane at the stern.

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FIGURE 57.-Equivalent depths and lengths in

cases of stepped decks (sections 2.92 and 2.93). b=Height of step in deck. D=Molded depth from second deck at the

side amidships. Ds=Equivalent depth used with the tonnage

mark table. L=Total length of portions of stepped deck. Lt=Equivalent length used with tonnage

mark table. I=Length of shorter portion of stepped

deck.

8 2.95 Tonnage mark table.

(a) Minimum distance from the molded line of the second deck to the upper edge of the tonnage mark.

(In inches)

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2.0 2.0 2.0 2.0 2.0 2.0 2.1

3.5

Length Li in feet:

220 and under. 230. 240. 250 260. 270 280. 290 300 310. 320. 330. 340 350.. 360. 370.. 380 390 400 410 420 430 440 450 460 470 480. 490 500. 610 520 530. 540. 550 560_ 570. 580. 590 600

2.0 3.2 4.7 6.3 8.0 9.9 11.8 13.9 16.0 18.3 20.7 23. 2 25.9 28.7 31.7 34.7 38.0 41.3 44.8 48. 2 51.5 54.8 58.4 62.1 65.9 69.8 73. 7 77.5 81.2 84.9 88.4 91.8 95.2 98.4 101.6 104.8 107.9 111.0 114.0 117.0 120.0 122.9 125.7 128.6 131.4 134.2 136.9 139.6 142.3 144.9 147.5 150.1 152.7 155. 3 157.8 160.2 162.6 165.1 167.5

2.0 2.0 2.0 3.3 4.8 6.4 8.1 9.9 11.7 13.7 15.8 18.0 20.4 22.9 25.5 28.3 31.1 34.1 37.2 40.3 43.4 46.5 49.9 53.4 57.0 60.7 64.4 68.1 71.6 75.1 78.4 81.6 84.8 87.8 90.8 93.8 96.8 99.7 102.5 105.3 108.0 110.7 113.4 116.1 118.7 121.2 123.8 126.3 128.8 131.3 133.7 136.1 138.5 140.8 143. 1 145.4 147.6 149.9 152.1

2.0 2.0 2.0 2.0 2.1 3.5 4.9 6.5 8.1 9.8 11.7 13.6 15.7 17.9 20.2 22. 7 25.3 27.9 30.7 33.5 36.4 39.4 42.6 46.0 49.5 53.0 56.5 60.0 63.4 66.7 69.9 72.9 75.9 78.8 81.6 84.4 87.2 90.0 92.6 95.2 97.8 100.4 102.9 105.4 107.8 110. 2 112.6 115.0 117.3 119.6 121.8 124.0 126.2 128.5 130.6 132.7 134.8 136.9 138.9

4.9 6.4 8.1 9.8 11.6 13.6 15.7 17.9 20.2 22.6 25.0 27.7 30.4 33. 3 36.4 39.6 42.9 46.3 49.7 53.0 56.2 59.4 62.4 65. 3 68.1 70.9 73.6 76.3 78.9 81.5 84.0 86.5 88.9 91.3 93.7 96.1 98.3 100.6 102.9 105.1 107.3 109.4 111.5 113.6 115.7 117.8 119.7 121.7 123.7 125.6 127.4

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.1 3.5 4.9 6.4 8.1 9.8 11.7 13.6 15.7 17.9 20.1 22.6 25. 2 27.9 30.9 33.9 37.1 40.4 43. 7 46.9 50.0 53.0 55.9 58.7 61.4 64.0 66.6 69.2 71.7 74.2 76.5 78.9 81.2 83.5 85.8 88.0 90.1 92.2 94.3 96.4 98.5 100.5 102.5 104.5 106.5 108.4 110.3 112.1 113.9 115.7 117.4

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.1 3.5 4.9 6.5 8.2 9.9 11.8 13.8 15.8 18.1 20.6 23. 2 26.0 29.0 32. 1 35.2 38.4 41.5 44.5 47.4 50.2 52.9 55.5 58.0 60.5 62.9 65.3 67.7 69.9 72.1 74.4 76.6 78.7 80.8 82.8 84.8 86.8 88.8 90.8 92.7 94.6 96.5 98.3 100.1 101.9 103.6 105.3 107.0 108.6

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.1 3.6 5.0 6.6 8.3 10.1 11.9 14.0 16.4 19.0 21.7 24.6 27.6 30.6 33. 7 36.7 39.6 42.4 45.1 47.7 50.2 52.6 55.0 57.3 59.6 61.9 64.0 66.2 68.3 70.4 72.4 74.4 76.3 78.3 80.2 82. 1 83.9 85.7 87.5 89.3 91.1 92.8 94.4 96.0 97.6 99.2 100.8

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.2 3.7 5.2 6.8 8.4 10.4 12.7 15. 2 17.8 20.6 23.5 26.5 29.5 32.4 35.2 37.9 40.5 43.0 45.4 47.8 50. 1 52.3 54.5 56.7 58.8 60.8 62.8 64.8 66.8 68.7 70.6 72.4 74. 2 76.0 77.8 79.5 81.2 82.9 84.5 86.1 87.8 89.3 90.8 92.3 93.8

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.4 3.8 5.3 7.2 9.4 11.8 14.4 17.1 19.9 22.8 25.7 28.5 31.2 33.9 36.4 38.8 41.2 43.4 45.6 47.8 49.9 52.0 54.0 56.0 58.0 59.9 61.7 63.6 65. 3 67.1 68.9 70.6 72.3 73.9 75.5 77.1 78.7 80.3 81.7 83.2 84.7

87.0 1,486.0

610

620. 630. 640 650 660. 670 680 690. 700. 710. 720 730 740. 750. 760 770. 780 790. 800.

(b) Examples of use of tonnage mark table.

(1) Consider a vessel in which:
Lt =450 feet.
DS 30 feet.
Lt/Ds=450/30=15.

In the table under the LD. column headed 15 and opposite the Le of 450 read 39.6 inches which is the distance from the molded line of the second deck at the side to the place where the upper edge of the tonnage mark should be placed.

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for freeboard or, in the absence of such a line, with reference to the deck line provided by $ 2.97.

(b) The upper edge of the tonnage mark shall be below the upper edge of the deck line, a distance equivalent to the sum of the vertical distance (determined by reference to the tonnage mark table) from the molded line of the second deck or equivalent to the upper edge of the tonnage mark plus the vertical distance from the molded line of the second deck or equivalent to the upper edge of the deck line. (See in figs. 55 and 56, a+t=m.)

(c) In the case of a vessel for which it is desired to have only one set of tonnages, the tonnage mark shall be placed at the level of the uppermost part of the loadline grid as provided by $ 2.91(b). (See fig. 56.) § 2.99 Application for measurement ac

cording to the optional dual-tonnage

method. (a) Application of the owner or his agent for measurement of a vessel under the provisions of the optional dual tonnage method shall be submitted in duplicate together with supporting plans or sketches to the customs officer in charge of the district in which the vessel is or will be located.

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$ 2.96 Line of the second deck.

No line of the second deck shall be marked on the side of the vessel. $ 2.97 Line of the uppermost complete

deck. (a) For a vessel having no statutory loadline, the line of the uppermost complete deck shall be marked similarly to the deck line provided by the Load Line Convention.

(b) The deck line shall be a horizontal line 12 inches long and 1 inch wide. It shall be marked abaft amidships above the place on each side of the vessel prescribed in § 2.90 for the tonnage mark. Its upper edge shall pass through the point where the continuation outward of the upper surface of the freeboard deck intersects the outer surface of the shell. (See fig. 58.) Where the deck is partly sheathed amidships, the upper edge of the deck line shall pass through the point where the continuation outward of the upper surface of the actual sheathing at amidships intersects the outer surface of the shell.

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§ 2.98 Placing the tonnage mark in re

lation to the deck line. (a) As a practical matter, since the molded line of the second deck is not to be marked on the side of the vessel, the position of the tonnage mark shall be determined by reference to the deck line

(b) The application shall include the following information: (See figures 55, 56, and 57.)

(1) Molded depth at midship section from second deck at side.

(2) Depth used with tonnage mark table.

(3) Length of shorter portion of stepped second deck if any.

(4) Total length of longer and shorter portions of stepped second deck.

(5) Length used with tonnage mark table.

regulations shall be accepted as evidence of proper marking.

(c) In the absence of a certification by the American Bureau of Shipping or other recognized classification society, the customs officer in charge may at any time cause a tonnage mark to be verified on a vessel in his district.

(6) Height of step (break) in the second deck, if any.

(7) Distance from the molded line of the second deck or equivalent to the upper edge of the tonnage mark.

(8) Molded draft to the upper edge of the tonnage mark.

(9) Freeboard from the loadline certificate.

(10) Molded draft to the loadline.

(11) Horizontal distance from the centerline of the loadline disk to the apex of the triangle on the tonnage mark.

(12) Vertical distance from the deck line to the tonnage mark.

(13) Vertical distance from the molded line of the second deck or equivalent to the deck line for freeboard.

(14) Allowance for fresh water and tropical waters (448 of the molded draft to the upper edge of the tonnage mark).

(15) The name and official number of the vessel, if assigned.

(16) Builder's name and hull number if official number has not been assigned.

(17) Time and place vessel will be available for measurement.

(18) Whether two sets of tonnages are desired.

(c) The owner may request confirmation of the proposed location of the tonnage mark based on the information contained in the application.

(d) On a copy of the application or on an attachment thereto, the owner shall be advised:

(1) That the vessel will be measured under the provisions of the optional dual-tonnage method; and

(2) Whether the proposed location of the tonnage mark determined according to the information furnished on the application is correct under the provisions of the regulations. $ 2.100 Certification as to location of

the tonnage mark. (a) Before a certificate of admeasurement shall be issued for a vessel requiring a tonnage mark, the owner or his agent shall certify that a tonnage mark has been placed on each side of the vessel in accordance with the pertinent provisions of the regulations.

(b) A certification by the American Bureau of Shipping or other recognized classification society that the tonnage marks have been placed on the vessel in accordance with the provisions of the

PART 3—DOCUMENTATION OF

VESSELS

GENERAL Sec. 3.1 General definitions. 3.2 Vessels entitled to documents. 3.3 Provisional registers. 3.4 Yachts entitled to documents. 3.5 Vessels exempt from documentation. 3.6 Marine documents; kinds of. 3.7 Marine documents; execution of. 3.8

Marine documents; new. 3.9 Marine documents to include dimen.

sions and tonnage. 3.10 Registers. 3.11 Enrollment and license; coasting trade

and fisheries. 3.12 Builder's certificates. 3.13 Oficial number and signal letters. 3.14 Evidence as to marking of official num

ber, net tonnage, name, and hailing

port. 3.16 Name and hailing port on documented

vessel. 8.17 Home port; definition; change of. 8.18 Forms of oath of owner and master for

documentation. 3.19 Citizenship; documentation, 3.20 Evidence of citizenship of owners and

oficers. 8.21 Execution of oaths for documentation,

for operation of certain vessels exempt from documentation,

and for qualification of certain corporations as citizens of the United

States. 3.21a Execution of oaths by a parent or sub

sidiary corporation. 3.22 Issue and record of marine documents. 3.23 Permanent documentation of vessel ab

sent from home port. 3.24 Change of master. 3.25 Renewal of license. 3.26 Surrender of permanent documents. 3.27 Surrender of temporary documents. 3.28 Rebuilt and new vessels. 3.29 Change of build or rig. 3.30 Exchange of documents. 3.31 Loss of marine document. 3.32 Sale or transfer of vessel; change in

membership of owning partnership. 3.33 Recording of bills of sale and mort

gages. 3.34 Issue of temporary document upon sale. 3.35 Sale abroad.

23 Stat. 118, as amended, 119, as amended, sec. 101, 76 Stat. 72; 5 U.S.C. 19, 301, U.S.C. 1624, 46 U.S.C. 2, 3, Gen. Hdnote. 11, Tariff Schedules of the United States, except as otherwise noted.

SOURCE: The provisions of this Part 3 appear at 28 F.R. 14575, Dec. 31, 1963, unless otherwise noted.

Sec. 3.36 Sale or charter to an alien. 3.37 Preferred mortgages. 3.38 Record and endorsement of preferred

mortgages and related instruments. 3.39 Certificate of ownership. 3.40 Frontier enrollment and license. 3.41 Transfer from frontier enrollment and

license. 3.42 Registry of foreign-built vessels. 3.43 Documentation of American-built for

eign-flag vessels. 3.44 Foreign-built yachts. 3.45 Certificate of protection. 3.46 Recorded vessels. 3.47 Record of American-built vessels owned

by aliens. 3.48 Certificates of record. 3.49 Prizes and forfeited vessels. 3.50 Inspection of marine documents. 3.51 Change of name of documented vessel. 3.52 Fee for change of vessel's name. 3.53 Yacht privileges and obligations. 3.54 Vessels to be inspected before docu

mentation. 3.55 Citizenship of masters of documented

vessels. 3.56 Revocation or denial of document. 3.57 Report of laid-up vessels. DOCUMENTATION OF VESSELS UNDER THE ACT

OF AUGUST 9, 1954 3.60 Vessels entitled to docurgents. 3.61 Provisional register. 3.62 Marine documents; classes; period of

validity. 3.63 Marine documents; execution of. 3.64 Marine documents to include dimen

sions and tonnage. 3.65 Application for oficial number and

signal letters. 3.66 Designation of home port. 3.67 Coastwise permit. 3.68 Marking of official number and not

tonnage. 3.69 Home port; change of. 3.70 Master's oath for enrollment and

license. 3.71 Change of master. 3.72 Issue, record, and surrender of docu

ments. 3.73 Renewal of document. 3.74 Exchange of documents. REGISTRATION OF PRIVATE CODE SIGNALS,

HOUSE FLAGS, AND FUNNEL MARKS 3.80 Application for registration of rockets,

lights, or other similar code signals,

house flags, or funnel marks. 3.81 Registration of rockets, lights, or other

signals, house flags, or funnel marks. 8.82 Fee for registering a house flag or

funnel mark, or both. Appendix.

AUTHORITY: The provisions of this Part 3 issued under sec. 624, 46 Stat. 759, secs. 2, 3,

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GENERAL § 3.1

General definitions. For the purposes of this part and Part 4 of this chapter:

(a) The word "vessel” includes every description of watercraft or other contrivance used or capable of being used as a means of transportation on water, but does not include aircraft.

(b) The term “vessel of the United States” means any vessel documented under the laws of the United States.

(c) The term “documented” means registered, enrolled, and licensed, or licensed under the laws of the United States, whether permanently or temporarily.

(d) The term "marine document" includes registry, enrollment and license, and license.

(e) The term “port of documentation" means the home port of a vessel. It does not include a port in which a temporary document is issued.

(f) The term "mortgagee,” in the case of a mortgage involving a trust deed and a bond issue thereunder, means the trustee designated in such deed.

(g) The term “noncontigious territory of the United States" includes all the island Territories and possessions of the United States, but does not include the Canal Zone.

(h) The term "parent corporation” means a corporation incorporated under the laws of the United States, or any State, Territory, District, or possession thereof, which controls, directly or indirectly, at least 50 percent of the voting stock of a corporation which is a citizen of the United States as defined in $ 3.19(a) (4) and for which there is on file with the proper collector of customs a valid and current certificate under oath as requireu by $ 3.21a.

(i) The term “subsidiary corporation" means a corporation incorporated under the laws of the United States, or any State, Territory, District, or possession thereof, not less than 50 percent of the voting stock of which is controlled, di

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