1、Designation:F90685(Reapproved 2014)An American National StandardStandard Specification forLetters and Numerals for Ships1This standard is issued under the fixed designation F906;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the yea
2、r of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification specifies shape,
3、size,spacing,andshading of letters and numerals to be used aboard ship.1.2 Characters are of Five Types:1.2.1 Type 1Plain letters and numerals(16 units).1.2.2 Type 2Block letters and numerals(12 units).1.2.3 Type 3Type 2 characters with shading(shading1unit).1.2.4 Type 4Block letters(10 units)and nu
4、merals(12units).1.2.5 Type 5Type 4 characters with shading(shading1unit).1.3 This specification does not give location or size ofvarious shipboard markings incorporating letters and numerals.2.Ordering Information2.1 When ordering letters and numerals in accordance withthis specification,it is neces
5、sary to state theASTM designationand the type and height of the character.3.General Requirements3.1 Characters are designed using the grid method whichallows the size of the character to be changed proportionatelyas required.3.1.1 Character Stroke(thickness 2 units).3.1.2 Character Width:3.1.2.1 Typ
6、e 1,Plain Characters12 in accordance withFig.1 unless otherwise noted.3.1.2.2 Type 2,Block Characters8 units in accordancewith Fig.2 unless otherwise noted.3.1.2.3 Type 3,Block Characters with Shadingsame asType 2 plus 1 unit for shading in accordance with Fig.3.3.1.2.4 Type 4,Block Characters,Lette
7、rswidth varies.Numerals8 units.3.1.2.5 Type 5,Block Characters with Shadingsame asType 4 plus 1 unit for shading.3.2 Sizing of the Character:3.2.1 Type 1space characters in accordance with Table 1.3.2.2 Type 2space characters in accordance with Table 1.3.2.3 Type 3space characters in accordance with
8、 Table 1with 1 unit added to each value for shading.3.2.4 Type 4space letters in accordance with Fig.4;spacing shall be equal to the space following the letter.Numerals shall be spaced in accordance with Table 1.3.2.5 Type 5space letters in accordance with Fig.5;spacing shall be equal to the space f
9、ollowing the letter.Numerals shall be spaced in accordance with Table 1 with 1unit added to each value for shading.3.3 Spacing Between Words,After Punctuation,or BetweenSentences:3.3.1 The space between words,after a comma,and after aperiod(as after initials)shall be in accordance with Table 1.3.3.2
10、 The space between sentences shall be in accordancewith Table 1.3.3.3 The space between a letter and a comma or period(forany use)shall be 2 units.3.3.4 The space between lines shall be equal to one half theheight of the tallest letter.4.Keywords4.1 block characters;block letters;block numerals;lett
11、ers;marine;numerals;plain letters;plain numerals;shading;ship;ship letters;ship markings;ship numerals1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.07 onGeneral Requirements.Current edition appro
12、ved Dec.1,2007.Published January 2008.Originallyapproved in 1984.Last previous edition approved in 2003 as F906 85(2003).DOI:10.1520/F0906-85R07.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TABLE 1 Spacing Between Letters and NumeralsA
13、UnitsLettersandNumerals4334332213411111A*+Z7A,XJ4V,W,YTB,D,O,Q,S3,5,8*+A,V,W,X,Z7J,T,Y4C,E,R*+A,V,W,X,Z7J,T,Y4F*+X,Z7T,W,YA4JG6*+A,V,W,X,Z7J,T,Y4H,I,M,N,U1,9*+A,V,W,X,Z7J,T,Y4J*+A,V,W,X,Z7J,T,Y4K*+A,V,W,X,Z7J,T,Y4L*+Z7A,X4V,WT,YP*+V,W,X,Z7T,Y4AJT*+V,W,X,Z7T,Y4AJV,W*+V,W,X,Z7T,Y4AJX*+A,V,W,X,Z7J,T,Y4
14、Y7*+V,W,X,Z7T,Y4AJZ2*+A,V,W,X,Z7J,T,Y4Spacing Between Words and After PunctuationType 11817341717171634Types251413341313131234Spacing Between SentencesType 12221342121212034Types251817341717171634AKey:*means space for:B,D,E,F,H,I,K,L,M,N,P,R,U 1,3,8(also used for punctuation and sentence spacing).+m
15、eans space for:C,G,O,Q,S 0,2,5,6,9.indicates that a portion of a letter enters the area of the next letter.Character Spacing:Select a character from the vertical column,read across locating the next character,read up to find the correct spacing.Example:If the letter“K”is followed by the letter“A”the
16、 spacing is 1 unit.If the letter“F”is followed by the letter“H”the spacing is 2 units.Punctuation and Sentence Spacing:Locate in column of table the last character of word,read across locating(*),drop vertically down to the appropriate row and read spacing.Example:If the first word was“vessel,”the spacing to the first letter of the next word is 12 units.F906 85(2007)2 NOTE1Height:Letters16 UnitsNumerals16 UnitsFIG.1Type 1Plain Letters and NumeralsNOTE1Height:Letters12 UnitsNumerals12 UnitsFIG.2T
