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data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">US military vessel</div> <table class="infobox" style="width:25.5em;border-spacing:2px;"> <tbody><tr> <td colspan="2" style="text-align:center;line-height:1.5em;"><span typeof="mw:File"><a href="/wiki/File:USNS_Impeccable_T-AGOS-23.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/USNS_Impeccable_T-AGOS-23.jpg/300px-USNS_Impeccable_T-AGOS-23.jpg" decoding="async" width="300" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dc/USNS_Impeccable_T-AGOS-23.jpg/450px-USNS_Impeccable_T-AGOS-23.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dc/USNS_Impeccable_T-AGOS-23.jpg/600px-USNS_Impeccable_T-AGOS-23.jpg 2x" data-file-width="640" data-file-height="480" /></a></span><div>the USNS <i>Impeccable</i>, the only ship of the class.</div> </td></tr><tr><th colspan="2" style="background-color:#C3D6EF;color:inherit;text-align:center;vertical-align:middle;font-size:110%;">Class overview</th></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Name</td><td><i>Impeccable</i> class</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Builders</td><td><ul style="list-style:none; margin:0;"> <li style="padding-left: .4em; text-indent: -.4em;"><i>Tampa Shipyards</i>, <a href="/wiki/Tampa,_Florida" title="Tampa, Florida">Tampa</a>, <a href="/wiki/Florida" title="Florida">Florida</a></li> <li style="padding-left: .4em; text-indent: -.4em;">(13-18) <i>Halter Marine, Inc.</i>, <a href="/wiki/Moss_Point,_Mississippi" title="Moss Point, Mississippi">Moss Point</a>, <a href="/wiki/Mississippi" title="Mississippi">Mississippi</a></li> </ul></td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Operators</td><td><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_the_United_States_Navy.svg/23px-Flag_of_the_United_States_Navy.svg.png" decoding="async" width="23" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_the_United_States_Navy.svg/35px-Flag_of_the_United_States_Navy.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Flag_of_the_United_States_Navy.svg/46px-Flag_of_the_United_States_Navy.svg.png 2x" data-file-width="660" data-file-height="520" /></span></span> </span><a href="/wiki/United_States_Navy" title="United States Navy">United States Navy</a></td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Preceded by</td><td><a href="/wiki/Victorious-class_ocean_surveillance_ship" class="mw-redirect" title="Victorious-class ocean surveillance ship"><i>Victorious</i> class</a></td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">In service</td><td>November 1, 2000</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Planned</td><td>6</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Building</td><td>0</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Completed</td><td>1</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Cancelled</td><td>5</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Active</td><td>1</td></tr> <tr><th colspan="2" style="background-color:#C3D6EF;color:inherit;text-align:center;vertical-align:middle;font-size:110%;">General characteristics</th></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Type</td><td><i>Impeccable</i>-class <a href="/wiki/Ocean_surveillance_ship" class="mw-redirect" title="Ocean surveillance ship">ocean surveillance ship</a></td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Displacement</td><td>5,368 tons</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Length</td><td>281 ft 5 in (85.78 m)</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Beam</td><td>95 ft 8 in (29.16 m)</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Draft</td><td>26 ft (7.9 m)</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Propulsion</td><td><a href="/wiki/Diesel-electric" class="mw-redirect" title="Diesel-electric">diesel-electric</a>, two shafts, 5,000shp</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Speed</td><td>12 knots (22 km/h; 14 mph)</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Complement</td><td>25 civilian mariners, 25 military</td></tr> <tr style="vertical-align:top;"><td style="font-weight: bold">Sensors and <br /> processing systems</td><td><a href="/wiki/SURTASS" class="mw-redirect" title="SURTASS">SURTASS</a> passive and active low frequency <a href="/wiki/Sonar" title="Sonar">sonar</a> arrays</td></tr> </tbody></table> <p>The <b><i>Impeccable</i>-class ocean surveillance ship</b> is a single-ship class of <a href="/wiki/United_States_Navy" title="United States Navy">United States Navy</a> special mission-support <a href="/wiki/Ship" title="Ship">ship</a>. The original intention was to build six undersea ocean-surveillance ships carrying a SURTASS passive towed array and a Low Frequency Active transducer array. Only the lead ship, <a href="/wiki/USNS_Impeccable" title="USNS Impeccable">USNS <i>Impeccable</i> (T-AGOS-23)</a>, was built. </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Impeccable-class_ocean_surveillance_ship&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>On March 28, 1991, <a href="/w/index.php?title=Tampa_Shipyards&action=edit&redlink=1" class="new" title="Tampa Shipyards (page does not exist)">Tampa Shipyards</a> was awarded the contract to build the first ship of the class, the <a href="/wiki/USNS_Impeccable" title="USNS Impeccable">USNS <i>Impeccable</i> (T-AGOS-23)</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The keel was laid on March 15, 1992. However, before the ship was completed, Tampa Shipyards went <a href="/wiki/Bankrupt" class="mw-redirect" title="Bankrupt">bankrupt</a>, and construction of the rest of the ship class was cancelled. The Chief of Naval Operations for the <a href="/wiki/United_States_Navy" title="United States Navy">United States Navy</a> asserted the requirement to finish the initial ship. The incomplete hull was towed to <a href="/wiki/Gulfport,_Mississippi" title="Gulfport, Mississippi">Gulfport</a>, <a href="/wiki/Mississippi" title="Mississippi">Mississippi</a> in 1995, where it was completed by <a href="/wiki/Halter_Marine" class="mw-redirect" title="Halter Marine">Halter Marine</a> Inc. <i>Impeccable</i> was officially launched on November 1, 2000.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>A second ship, the <a class="mw-selflink selflink">USNS <i>Integrity</i> (T-AGOS-24)</a>, was planned. However, the contract was never awarded.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and the other four ships were never named. </p> <div class="mw-heading mw-heading2"><h2 id="Similar_ship_classes">Similar ship classes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Impeccable-class_ocean_surveillance_ship&action=edit&section=2" title="Edit section: Similar ship classes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <i>Impeccable</i> class is similar in appearance to the much smaller four ship <a href="/wiki/Victorious-class_ocean_surveillance_ship" class="mw-redirect" title="Victorious-class ocean surveillance ship"><i>Victorious</i> class</a>, led by the <a href="/wiki/USNS_Victorious" title="USNS Victorious">USNS <i>Victorious</i> (T-AGOS-19)</a>. Both classes are <a href="/wiki/SWATH" class="mw-redirect" title="SWATH">SWATH</a> type ships. </p><p>The ships perform a similar surveillance function to the older 18-ship <a href="/wiki/Stalwart-class_ocean_surveillance_ship" title="Stalwart-class ocean surveillance ship"><i>Stalwart</i> class</a>, whose lead ship is the <a href="/wiki/USNS_Stalwart" title="USNS Stalwart">USNS <i>Stalwart</i> (T-AGOS-1)</a>. The <i>Stalwart</i> class is not a SWATH hull, but a modified oceangoing tug. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Impeccable-class_ocean_surveillance_ship&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.nvr.navy.mil/SHIPDETAILS/SHIPSDETAIL_AGOS_23.HTML">"T-AGOS 23 Naval Vessel Registry"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=T-AGOS+23+Naval+Vessel+Registry&rft_id=http%3A%2F%2Fwww.nvr.navy.mil%2FSHIPDETAILS%2FSHIPSDETAIL_AGOS_23.HTML&rfr_id=info%3Asid%2Fen.wikipedia.org%3AImpeccable-class+ocean+surveillance+ship" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090312072727/http://www.msc.navy.mil/N00p/pressrel/press00/press26.htm">"USNS Impeccable Christened Nov. 1"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.msc.navy.mil/N00p/pressrel/press00/press26.htm">the original</a> on 2009-03-12<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-03-09</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=USNS+Impeccable+Christened+Nov.+1&rft_id=http%3A%2F%2Fwww.msc.navy.mil%2FN00p%2Fpressrel%2Fpress00%2Fpress26.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AImpeccable-class+ocean+surveillance+ship" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.nvr.navy.mil/NVRSHIPS/S_AGOS.HTM">"T-AGOS Class Naval Vessel Registry"</a>.</cite><span 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aria-labelledby="Impeccable-class_ocean_surveillance_ships" style=";wide;padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background-color:#C3D6EF;color:inherit;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output 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surveillance ship"><abbr title="Discuss this template" style="color:inherit">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Impeccable-class_ocean_surveillance_ship" title="Special:EditPage/Template:Impeccable-class ocean surveillance ship"><abbr title="Edit this template" style="color:inherit">e</abbr></a></li></ul></div><div id="Impeccable-class_ocean_surveillance_ships" style="font-size:114%;margin:0 4em"><a class="mw-selflink selflink"><i>Impeccable</i>-class ocean surveillance ships</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/USNS_Impeccable" title="USNS Impeccable"><i>Impeccable</i></a></li> <li><a class="mw-selflink selflink"><i>Integrity</i></a></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Preceded by: <a href="/wiki/Victorious-class_ocean_surveillance_ship" class="mw-redirect" title="Victorious-class ocean surveillance ship"><i>Victorious</i> class</a></li> <li>Followed by: <i>None</i></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="background-color:#DCDCDC;color:inherit;"><div> <ul><li><a href="/wiki/List_of_auxiliaries_of_the_United_States_Navy" title="List of auxiliaries of the United States Navy">List of auxiliaries of the United States Navy</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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