{"id":4802,"date":"2025-11-03T08:47:23","date_gmt":"2025-11-03T01:47:23","guid":{"rendered":"https:\/\/antoanhanghai.com\/?p=4802"},"modified":"2025-11-03T08:47:23","modified_gmt":"2025-11-03T01:47:23","slug":"speed-log","status":"publish","type":"post","link":"https:\/\/antoanhanghai.com\/en\/speed-log\/","title":{"rendered":"X\u1eed l\u00fd khi m\u1ea5t t\u00edn hi\u1ec7u Doppler Speed Log khi t\u00e0u \u0111ang h\u00e0nh tr\u00ecnh"},"content":{"rendered":"<p data-start=\"264\" data-end=\"603\"><strong data-start=\"264\" data-end=\"291\">Doppler Speed Log (DSL)<\/strong> l\u00e0 thi\u1ebft b\u1ecb quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u01b0\u1edbng h\u00e0ng h\u1ea3i hi\u1ec7n \u0111\u1ea1i. N\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 th\u1ef1c so v\u1edbi n\u01b0\u1edbc bi\u1ec3n, d\u00f9ng \u0111\u1ec3 h\u1ed7 tr\u1ee3 radar ARPA, autopilot, VDR v\u00e0 ECDIS. Tuy nhi\u00ean, trong th\u1ef1c t\u1ebf v\u1eadn h\u00e0nh, kh\u00f4ng \u00edt l\u1ea7n thi\u1ebft b\u1ecb DSL <strong data-start=\"523\" data-end=\"558\">m\u1ea5t t\u00edn hi\u1ec7u ho\u1eb7c \u0111o sai s\u1ed1 l\u1edbn<\/strong> \u2013 nh\u1ea5t l\u00e0 khi t\u00e0u \u0111i v\u00e0o v\u00f9ng n\u01b0\u1edbc \u0111\u1eb7c bi\u1ec7t.<\/p>\n<p data-start=\"605\" data-end=\"795\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t <strong data-start=\"621\" data-end=\"643\">t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf<\/strong> t\u00f4i t\u1eebng g\u1eb7p khi h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt cho m\u1ed9t t\u00e0u h\u00e0ng qu\u1ed1c t\u1ebf, k\u00e8m theo c\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh d\u1eef li\u1ec7u h\u00e0nh tr\u00ecnh.<\/p>\n<h3 data-start=\"802\" data-end=\"864\"><strong data-start=\"806\" data-end=\"864\">T\u00ecnh hu\u1ed1ng: T\u00e0u \u0111ang h\u00e0nh tr\u00ecnh nh\u01b0ng Doppler Speed Log m\u1ea5t t\u00edn hi\u1ec7u<\/strong><\/h3>\n<p data-start=\"866\" data-end=\"998\">T\u00e0u container 35.000 DWT, \u0111ang h\u00e0nh tr\u00ecnh t\u1eeb H\u00e0n Qu\u1ed1c \u0111i Singapore, \u1edf v\u00f9ng n\u01b0\u1edbc s\u00e2u h\u01a1n 200m, tr\u1eddi l\u1ea1nh 12\u00b0C.<br data-start=\"975\" data-end=\"978\" \/>Thuy\u1ec1n tr\u01b0\u1edfng b\u00e1o:<\/p>\n<ul data-start=\"999\" data-end=\"1216\">\n<li data-start=\"999\" data-end=\"1057\">\n<p data-start=\"1001\" data-end=\"1057\">M\u00e0n h\u00ecnh Doppler hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o &#8220;NO DOPPLER SIGNAL&#8221;<\/p>\n<\/li>\n<li data-start=\"1058\" data-end=\"1098\">\n<p data-start=\"1060\" data-end=\"1098\">T\u1ed1c \u0111\u1ed9 \u0111o hi\u1ec3n th\u1ecb b\u1eb1ng GPS fallback<\/p>\n<\/li>\n<li data-start=\"1099\" data-end=\"1152\">\n<p data-start=\"1101\" data-end=\"1152\">Relay c\u1ea3nh b\u00e1o truy\u1ec1n v\u1ec1 BNWAS k\u00edch ho\u1ea1t li\u00ean t\u1ee5c<\/p>\n<\/li>\n<li data-start=\"1153\" data-end=\"1216\">\n<p data-start=\"1155\" data-end=\"1216\">D\u1eef li\u1ec7u \u0111\u1ea7u ra NMEA <code data-start=\"1175\" data-end=\"1183\">$IIVBW<\/code> g\u1eedi v\u1ec1 radar v\u00e0 VDR b\u1ecb gi\u00e1n \u0111o\u1ea1n<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1223\" data-end=\"1305\"><strong data-start=\"1227\" data-end=\"1305\">1. X\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n \u2013 ph\u00e2n lo\u1ea1i l\u1ed7i ph\u1ea7n c\u1ee9ng hay \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng<\/strong><\/h3>\n<p data-start=\"1307\" data-end=\"1341\">\ud83d\udd0d C\u00e1c nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p g\u1ed3m:<\/p>\n<p data-start=\"1343\" data-end=\"1379\"><strong data-start=\"1343\" data-end=\"1379\">A. Do \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng bi\u1ec3n:<\/strong><\/p>\n<ul data-start=\"1380\" data-end=\"1641\">\n<li data-start=\"1380\" data-end=\"1489\">\n<p data-start=\"1382\" data-end=\"1489\"><strong data-start=\"1382\" data-end=\"1412\">\u0110\u1ed9 s\u00e2u \u0111\u00e1y qu\u00e1 l\u1edbn (&gt;100m)<\/strong> \u2192 t\u00edn hi\u1ec7u ph\u1ea3n x\u1ea1 t\u1eeb \u0111\u00e1y b\u1ecb suy gi\u1ea3m \u2192 thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u1ee7 ph\u1ea3n h\u1ed3i \u0111\u1ec3 x\u1eed l\u00fd.<\/p>\n<\/li>\n<li data-start=\"1490\" data-end=\"1588\">\n<p data-start=\"1492\" data-end=\"1588\"><strong data-start=\"1492\" data-end=\"1527\">N\u01b0\u1edbc l\u1ea1nh, m\u1eadt \u0111\u1ed9 plankton th\u1ea5p<\/strong> \u2192 s\u00f3ng \u00e2m kh\u00f3 ph\u1ea3n x\u1ea1 l\u1ea1i \u2192 t\u00edn hi\u1ec7u y\u1ebfu ho\u1eb7c m\u1ea5t ho\u00e0n to\u00e0n.<\/p>\n<\/li>\n<li data-start=\"1589\" data-end=\"1641\">\n<p data-start=\"1591\" data-end=\"1641\"><strong data-start=\"1591\" data-end=\"1621\">C\u00f3 d\u00f2ng n\u01b0\u1edbc xi\u1ebft b\u00ean d\u01b0\u1edbi<\/strong> \u2192 l\u00e0m l\u1ec7ch tr\u1ee5c \u0111o.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1643\" data-end=\"1678\"><strong data-start=\"1643\" data-end=\"1678\">B. Do v\u1ea5n \u0111\u1ec1 k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb:<\/strong><\/p>\n<ul data-start=\"1679\" data-end=\"1960\">\n<li data-start=\"1679\" data-end=\"1741\">\n<p data-start=\"1681\" data-end=\"1741\">M\u1eb7t transducer b\u1ecb b\u1ea9n, h\u00e0 b\u00e1m sau nhi\u1ec1u th\u00e1ng kh\u00f4ng drydock.<\/p>\n<\/li>\n<li data-start=\"1742\" data-end=\"1806\">\n<p data-start=\"1744\" data-end=\"1806\">K\u1ebft n\u1ed1i c\u00e1p gi\u1eefa transducer v\u00e0 unit trung t\u00e2m b\u1ecb l\u1ecfng, g\u1ec9 s\u00e9t.<\/p>\n<\/li>\n<li data-start=\"1807\" data-end=\"1884\">\n<p data-start=\"1809\" data-end=\"1884\">C\u1ea5u h\u00ecnh sai <strong data-start=\"1822\" data-end=\"1837\">Track Depth<\/strong> khi\u1ebfn thi\u1ebft b\u1ecb \u0111o sai v\u1ecb tr\u00ed m\u1ee5c ti\u00eau ph\u1ea3n x\u1ea1.<\/p>\n<\/li>\n<li data-start=\"1885\" data-end=\"1960\">\n<p data-start=\"1887\" data-end=\"1960\">C\u00f3 sonar ho\u1eb7c thi\u1ebft b\u1ecb th\u1ee7y \u00e2m kh\u00e1c ph\u00e1t c\u00f9ng t\u1ea7n s\u1ed1 \u2192 g\u00e2y nhi\u1ec5u Doppler.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1967\" data-end=\"2008\"><strong data-start=\"1971\" data-end=\"2008\">2. C\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng<\/strong><\/h3>\n<p data-start=\"2010\" data-end=\"2180\">\u2705 <strong data-start=\"2012\" data-end=\"2068\">B\u01b0\u1edbc 1: Chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 AUTO (n\u1ebfu ch\u01b0a k\u00edch ho\u1ea1t)<\/strong><br data-start=\"2068\" data-end=\"2071\" \/>Thi\u1ebft b\u1ecb s\u1ebd t\u1ef1 \u0111\u1ed9ng fallback sang GPS khi Doppler b\u1ecb l\u1ed7i \u2192 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 v\u1eabn \u0111\u01b0\u1ee3c xu\u1ea5t ra cho h\u1ec7 th\u1ed1ng kh\u00e1c.<\/p>\n<p data-start=\"2182\" data-end=\"2230\">\u2705 <strong data-start=\"2184\" data-end=\"2228\">B\u01b0\u1edbc 2: Ki\u1ec3m tra ngu\u1ed3n v\u00e0 relay c\u1ea3nh b\u00e1o<\/strong><\/p>\n<ul data-start=\"2231\" data-end=\"2329\">\n<li data-start=\"2231\" data-end=\"2262\">\n<p data-start=\"2233\" data-end=\"2262\">\u0110\u1ea3m b\u1ea3o \u0111i\u1ec7n \u00e1p c\u1ea5p \u1ed5n \u0111\u1ecbnh<\/p>\n<\/li>\n<li data-start=\"2263\" data-end=\"2329\">\n<p data-start=\"2265\" data-end=\"2329\">Ng\u1eaft t\u1ea1m th\u1eddi relay b\u00e1o l\u1ed7i n\u1ebfu c\u1ea7n \u0111\u1ec3 tr\u00e1nh nhi\u1ec5u b\u00e1o \u0111\u1ed9ng kh\u00e1c<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2331\" data-end=\"2396\">\u2705 <strong data-start=\"2333\" data-end=\"2394\">B\u01b0\u1edbc 3: So s\u00e1nh d\u1eef li\u1ec7u Doppler Speed Log v\u00e0 GPS (n\u1ebfu c\u00f3 song song)<\/strong><\/p>\n<ul data-start=\"2397\" data-end=\"2558\">\n<li data-start=\"2397\" data-end=\"2499\">\n<p data-start=\"2399\" data-end=\"2499\">N\u1ebfu l\u1ec7ch qu\u00e1 1 knot \u2192 nhi\u1ec1u kh\u1ea3 n\u0103ng Doppler sai s\u1ed1 do s\u00f3ng bi\u1ec3n ho\u1eb7c thi\u1ebft l\u1eadp offset kh\u00f4ng chu\u1ea9n<\/p>\n<\/li>\n<li data-start=\"2500\" data-end=\"2558\">\n<p data-start=\"2502\" data-end=\"2558\">Ghi nh\u1eadn nh\u1eadt k\u00fd log l\u1ed7i n\u1ebfu thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 (Error Log)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2560\" data-end=\"2602\">\u2705 <strong data-start=\"2562\" data-end=\"2600\">B\u01b0\u1edbc 4: Ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u1eadt l\u00fd<\/strong><\/p>\n<ul data-start=\"2603\" data-end=\"2757\">\n<li data-start=\"2603\" data-end=\"2677\">\n<p data-start=\"2605\" data-end=\"2677\">Quan s\u00e1t xem t\u00e0u c\u00f3 \u0111ang ch\u1ea1y \u1edf ch\u1ebf \u0111\u1ed9 c\u00f3 nhi\u1ec1u b\u1ecdt kh\u00ed d\u01b0\u1edbi \u0111\u00e1y kh\u00f4ng<\/p>\n<\/li>\n<li data-start=\"2678\" data-end=\"2757\">\n<p data-start=\"2680\" data-end=\"2757\">Xem l\u1ea1i l\u1ecbch b\u1ea3o tr\u00ec \u2013 l\u1ea7n cu\u1ed1i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c v\u1ec7 sinh, hi\u1ec7u chu\u1ea9n l\u00e0 khi n\u00e0o?<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2764\" data-end=\"2826\"><strong data-start=\"2768\" data-end=\"2826\">3. Gi\u1ea3i ph\u00e1p l\u00e2u d\u00e0i \u0111\u1ec3 tr\u00e1nh l\u1ed7i Doppler Speed Log m\u1ea5t t\u00edn hi\u1ec7u<\/strong><\/h3>\n<p data-start=\"2828\" data-end=\"2864\">\ud83c\udfaf <strong data-start=\"2831\" data-end=\"2864\">K\u1ef9 thu\u1eadt vi\u00ean v\u00e0 \u0111\u1ed9i t\u00e0u n\u00ean:<\/strong><\/p>\n<ul data-start=\"2865\" data-end=\"3209\">\n<li data-start=\"2865\" data-end=\"2921\">\n<p data-start=\"2867\" data-end=\"2921\">B\u1eadt ch\u1ebf \u0111\u1ed9 AUTO m\u1eb7c \u0111\u1ecbnh \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n GPS khi c\u1ea7n<\/p>\n<\/li>\n<li data-start=\"2922\" data-end=\"3007\">\n<p data-start=\"2924\" data-end=\"3007\">Thi\u1ebft l\u1eadp <strong data-start=\"2934\" data-end=\"2949\">Track Depth<\/strong> ph\u00f9 h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf \u0111\u00e1y t\u00e0u (container\/tanker kh\u00e1c nhau)<\/p>\n<\/li>\n<li data-start=\"3008\" data-end=\"3076\">\n<p data-start=\"3010\" data-end=\"3076\">Ki\u1ec3m tra v\u00e0 <strong data-start=\"3022\" data-end=\"3056\">v\u1ec7 sinh m\u1eb7t transducer \u0111\u1ecbnh k\u1ef3<\/strong> m\u1ed7i l\u1ea7n t\u00e0u drydock<\/p>\n<\/li>\n<li data-start=\"3077\" data-end=\"3137\">\n<p data-start=\"3079\" data-end=\"3137\">Tr\u00e1nh \u0111\u1eb7t sonar ho\u1eb7c echo sounder qu\u00e1 g\u1ea7n thi\u1ebft b\u1ecb Doppler<\/p>\n<\/li>\n<li data-start=\"3138\" data-end=\"3209\">\n<p data-start=\"3140\" data-end=\"3209\">L\u01b0u Error Log v\u00e0 t\u1ed1c \u0111\u1ed9 trung b\u00ecnh m\u1ed7i tu\u1ea7n \u0111\u1ec3 ph\u00e1t hi\u1ec7n xu h\u01b0\u1edbng l\u1ed7i<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"3216\" data-end=\"3267\"><strong data-start=\"3220\" data-end=\"3267\">4. Kinh nghi\u1ec7m r\u00fat ra t\u1eeb t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf<\/strong><\/h3>\n<p data-start=\"3269\" data-end=\"3411\">T\u00f4i t\u1eebng x\u1eed l\u00fd t\u00ecnh hu\u1ed1ng t\u01b0\u01a1ng t\u1ef1 tr\u00ean 2 t\u00e0u ch\u1edf LNG v\u00e0 t\u00e0u h\u00e0ng r\u1eddi. 90% tr\u01b0\u1eddng h\u1ee3p m\u1ea5t t\u00edn hi\u1ec7u Doppler kh\u00f4ng ph\u1ea3i do thi\u1ebft b\u1ecb h\u1ecfng, m\u00e0 do:<\/p>\n<ul data-start=\"3412\" data-end=\"3563\">\n<li data-start=\"3412\" data-end=\"3469\">\n<p data-start=\"3414\" data-end=\"3469\">\u0110i\u1ec1u ki\u1ec7n bi\u1ec3n \u0111\u1eb7c bi\u1ec7t (n\u01b0\u1edbc l\u1ea1nh, \u0111\u00e1y s\u00e2u, d\u00f2ng ng\u1ea7m)<\/p>\n<\/li>\n<li data-start=\"3470\" data-end=\"3501\">\n<p data-start=\"3472\" data-end=\"3501\">M\u1eb7t transducer b\u1ecb h\u00e0, b\u00e1m b\u1ea9n<\/p>\n<\/li>\n<li data-start=\"3502\" data-end=\"3563\">\n<p data-start=\"3504\" data-end=\"3563\">C\u1ea5u h\u00ecnh kh\u00f4ng t\u1ed1i \u01b0u (Track Depth sai, Offset kh\u00f4ng ch\u1ec9nh)<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3565\" data-end=\"3688\">V\u00ec v\u1eady, \u0111\u1eebng v\u1ed9i thay thi\u1ebft b\u1ecb \u2013 tr\u01b0\u1edbc ti\u00ean h\u00e3y ki\u1ec3m tra k\u1ef9 c\u00e1c y\u1ebfu t\u1ed1 tr\u00ean v\u00e0 s\u1eed d\u1ee5ng fallback GPS nh\u01b0 ph\u01b0\u01a1ng \u00e1n d\u1ef1 ph\u00f2ng.<\/p>\n<h3 data-start=\"3695\" data-end=\"3711\"><strong data-start=\"3699\" data-end=\"3711\">K\u1ebft lu\u1eadn<\/strong><\/h3>\n<p data-start=\"3713\" data-end=\"4011\">Doppler Speed Log l\u00e0 h\u1ec7 th\u1ed1ng \u0111o t\u1ed1c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 tin c\u1eady, nh\u01b0ng kh\u00f4ng th\u1ec3 \u201cmi\u1ec5n nhi\u1ec5m\u201d v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf. Vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u1ea5u h\u00ecnh \u0111\u00fang v\u00e0 c\u00f3 quy tr\u00ecnh x\u1eed l\u00fd khi m\u1ea5t t\u00edn hi\u1ec7u l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb tr\u00ean t\u00e0u ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n<h3>Li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 nh\u1eadn t\u01b0 v\u1ea5n chi ti\u1ebft !\u00a0<strong>097 800 1968 (DT\/Zalo)<\/strong><\/h3>\n<p>Link :<\/p>\n<p><a href=\"https:\/\/youtu.be\/Yx8801cnQCo?si=DvBhrVwu9mgRm30p\" target=\"_blank\" rel=\"noopener\">Video Unbox S\u1ea3n Ph\u1ea9m<\/a><\/p>\n<p><a href=\"https:\/\/antoanhanghai.com\/en\/product\/do-toc-do-ds-99\/\">S\u1ea3n ph\u1ea9m\u00a0<\/a><\/p>\n<p><a href=\"https:\/\/www.imo.org\/en\" target=\"_blank\" rel=\"noopener\">IMO :<\/a><br \/>\n<a href=\"http:\/\/www.vr.org.vn\/\" target=\"_blank\" rel=\"noopener\">VR:<\/a><br \/>\n<a href=\"https:\/\/www.classnk.or.jp\/hp\/en\/index.html\" target=\"_blank\" rel=\"noopener\">NK<\/a><br \/>\n<a href=\"https:\/\/marine-offshore.bureauveritas.com\/marine\/ship-classification\" target=\"_blank\" rel=\"noopener\">BV<\/a><br \/>\n<a href=\"https:\/\/ww2.eagle.org\/en.html\" target=\"_blank\" rel=\"noopener\">ABS<\/a><br \/>\n<a href=\"https:\/\/www.ccs.org.cn\/ccswzen\/\" target=\"_blank\" rel=\"noopener\">CCS<\/a><\/p>\n<p>&nbsp;<\/p>\n<p data-start=\"3713\" data-end=\"4011\">","protected":false},"excerpt":{"rendered":"<p>Doppler Speed Log (DSL) l\u00e0 thi\u1ebft b\u1ecb quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng \u0111i\u1ec1u h\u01b0\u1edbng h\u00e0ng h\u1ea3i hi\u1ec7n \u0111\u1ea1i. N\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 th\u1ef1c so v\u1edbi n\u01b0\u1edbc bi\u1ec3n, d\u00f9ng \u0111\u1ec3 h\u1ed7 tr\u1ee3 radar ARPA, autopilot, VDR v\u00e0 ECDIS. Tuy nhi\u00ean, trong th\u1ef1c t\u1ebf v\u1eadn h\u00e0nh, kh\u00f4ng \u00edt l\u1ea7n thi\u1ebft b\u1ecb DSL m\u1ea5t t\u00edn hi\u1ec7u ho\u1eb7c \u0111o sai s\u1ed1 l\u1edbn \u2013 nh\u1ea5t l\u00e0 khi t\u00e0u \u0111i v\u00e0o v\u00f9ng n\u01b0\u1edbc \u0111\u1eb7c bi\u1ec7t. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf t\u00f4i t\u1eebng g\u1eb7p khi h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt cho m\u1ed9t t\u00e0u h\u00e0ng qu\u1ed1c t\u1ebf, k\u00e8m theo c\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd k\u1ef9 thu\u1eadt c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n v\u00e0 \u1ed5n \u0111\u1ecbnh d\u1eef li\u1ec7u h\u00e0nh tr\u00ecnh. T\u00ecnh hu\u1ed1ng: T\u00e0u \u0111ang h\u00e0nh tr\u00ecnh nh\u01b0ng Doppler Speed Log m\u1ea5t t\u00edn hi\u1ec7u T\u00e0u container 35.000 DWT, \u0111ang h\u00e0nh tr\u00ecnh t\u1eeb H\u00e0n Qu\u1ed1c \u0111i Singapore, \u1edf v\u00f9ng n\u01b0\u1edbc s\u00e2u h\u01a1n 200m, tr\u1eddi l\u1ea1nh 12\u00b0C.Thuy\u1ec1n tr\u01b0\u1edfng b\u00e1o: M\u00e0n h\u00ecnh Doppler hi\u1ec3n th\u1ecb c\u1ea3nh b\u00e1o &#8220;NO DOPPLER SIGNAL&#8221; T\u1ed1c \u0111\u1ed9 \u0111o hi\u1ec3n th\u1ecb b\u1eb1ng GPS fallback Relay c\u1ea3nh b\u00e1o truy\u1ec1n v\u1ec1 BNWAS k\u00edch ho\u1ea1t li\u00ean t\u1ee5c D\u1eef li\u1ec7u \u0111\u1ea7u ra NMEA $IIVBW g\u1eedi v\u1ec1 radar v\u00e0 VDR b\u1ecb gi\u00e1n \u0111o\u1ea1n 1. X\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n \u2013 ph\u00e2n lo\u1ea1i l\u1ed7i ph\u1ea7n c\u1ee9ng hay \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng \ud83d\udd0d C\u00e1c nguy\u00ean nh\u00e2n th\u01b0\u1eddng g\u1eb7p g\u1ed3m: A. Do \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng bi\u1ec3n: \u0110\u1ed9 s\u00e2u \u0111\u00e1y qu\u00e1 l\u1edbn (&gt;100m) \u2192 t\u00edn hi\u1ec7u ph\u1ea3n x\u1ea1 t\u1eeb \u0111\u00e1y b\u1ecb suy gi\u1ea3m \u2192 thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u1ee7 ph\u1ea3n h\u1ed3i \u0111\u1ec3 x\u1eed l\u00fd. N\u01b0\u1edbc l\u1ea1nh, m\u1eadt \u0111\u1ed9 plankton th\u1ea5p \u2192 s\u00f3ng \u00e2m kh\u00f3 ph\u1ea3n x\u1ea1 l\u1ea1i \u2192 t\u00edn hi\u1ec7u y\u1ebfu ho\u1eb7c m\u1ea5t ho\u00e0n to\u00e0n. C\u00f3 d\u00f2ng n\u01b0\u1edbc xi\u1ebft b\u00ean d\u01b0\u1edbi \u2192 l\u00e0m l\u1ec7ch tr\u1ee5c \u0111o. B. Do v\u1ea5n \u0111\u1ec1 k\u1ef9 thu\u1eadt thi\u1ebft b\u1ecb: M\u1eb7t transducer b\u1ecb b\u1ea9n, h\u00e0 b\u00e1m sau nhi\u1ec1u th\u00e1ng kh\u00f4ng drydock. K\u1ebft n\u1ed1i c\u00e1p gi\u1eefa transducer v\u00e0 unit trung t\u00e2m b\u1ecb l\u1ecfng, g\u1ec9 s\u00e9t. C\u1ea5u h\u00ecnh sai Track Depth khi\u1ebfn thi\u1ebft b\u1ecb \u0111o sai v\u1ecb tr\u00ed m\u1ee5c ti\u00eau ph\u1ea3n x\u1ea1. C\u00f3 sonar ho\u1eb7c thi\u1ebft b\u1ecb th\u1ee7y \u00e2m kh\u00e1c ph\u00e1t c\u00f9ng t\u1ea7n s\u1ed1 \u2192 g\u00e2y nhi\u1ec5u Doppler. 2. C\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u2705 B\u01b0\u1edbc 1: Chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 AUTO (n\u1ebfu ch\u01b0a k\u00edch ho\u1ea1t)Thi\u1ebft b\u1ecb s\u1ebd t\u1ef1 \u0111\u1ed9ng fallback sang GPS khi Doppler b\u1ecb l\u1ed7i \u2192 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 v\u1eabn \u0111\u01b0\u1ee3c xu\u1ea5t ra cho h\u1ec7 th\u1ed1ng kh\u00e1c. \u2705 B\u01b0\u1edbc 2: Ki\u1ec3m tra ngu\u1ed3n v\u00e0 relay c\u1ea3nh b\u00e1o \u0110\u1ea3m b\u1ea3o \u0111i\u1ec7n \u00e1p c\u1ea5p \u1ed5n \u0111\u1ecbnh Ng\u1eaft t\u1ea1m th\u1eddi relay b\u00e1o l\u1ed7i n\u1ebfu c\u1ea7n \u0111\u1ec3 tr\u00e1nh nhi\u1ec5u b\u00e1o \u0111\u1ed9ng kh\u00e1c \u2705 B\u01b0\u1edbc 3: So s\u00e1nh d\u1eef li\u1ec7u Doppler Speed Log v\u00e0 GPS (n\u1ebfu c\u00f3 song song) N\u1ebfu l\u1ec7ch qu\u00e1 1 knot \u2192 nhi\u1ec1u kh\u1ea3 n\u0103ng Doppler sai s\u1ed1 do s\u00f3ng bi\u1ec3n ho\u1eb7c thi\u1ebft l\u1eadp offset kh\u00f4ng chu\u1ea9n Ghi nh\u1eadn nh\u1eadt k\u00fd log l\u1ed7i n\u1ebfu thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 (Error Log) \u2705 B\u01b0\u1edbc 4: Ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u1eadt l\u00fd Quan s\u00e1t xem t\u00e0u c\u00f3 \u0111ang ch\u1ea1y \u1edf ch\u1ebf \u0111\u1ed9 c\u00f3 nhi\u1ec1u b\u1ecdt kh\u00ed d\u01b0\u1edbi \u0111\u00e1y kh\u00f4ng Xem l\u1ea1i l\u1ecbch b\u1ea3o tr\u00ec \u2013 l\u1ea7n cu\u1ed1i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c v\u1ec7 sinh, hi\u1ec7u chu\u1ea9n l\u00e0 khi n\u00e0o? 3. Gi\u1ea3i ph\u00e1p l\u00e2u d\u00e0i \u0111\u1ec3 tr\u00e1nh l\u1ed7i Doppler Speed Log m\u1ea5t t\u00edn hi\u1ec7u \ud83c\udfaf K\u1ef9 thu\u1eadt vi\u00ean v\u00e0 \u0111\u1ed9i t\u00e0u n\u00ean: B\u1eadt ch\u1ebf \u0111\u1ed9 AUTO m\u1eb7c \u0111\u1ecbnh \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n GPS khi c\u1ea7n Thi\u1ebft l\u1eadp Track Depth ph\u00f9 h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf \u0111\u00e1y t\u00e0u (container\/tanker kh\u00e1c nhau) Ki\u1ec3m tra v\u00e0 v\u1ec7 sinh m\u1eb7t transducer \u0111\u1ecbnh k\u1ef3 m\u1ed7i l\u1ea7n t\u00e0u drydock Tr\u00e1nh \u0111\u1eb7t sonar ho\u1eb7c echo sounder qu\u00e1 g\u1ea7n thi\u1ebft b\u1ecb Doppler L\u01b0u Error Log v\u00e0 t\u1ed1c \u0111\u1ed9 trung b\u00ecnh m\u1ed7i tu\u1ea7n \u0111\u1ec3 ph\u00e1t hi\u1ec7n xu h\u01b0\u1edbng l\u1ed7i 4. Kinh nghi\u1ec7m r\u00fat ra t\u1eeb t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf T\u00f4i t\u1eebng x\u1eed l\u00fd t\u00ecnh hu\u1ed1ng t\u01b0\u01a1ng t\u1ef1 tr\u00ean 2 t\u00e0u ch\u1edf LNG v\u00e0 t\u00e0u h\u00e0ng r\u1eddi. 90% tr\u01b0\u1eddng h\u1ee3p m\u1ea5t t\u00edn hi\u1ec7u Doppler kh\u00f4ng ph\u1ea3i do thi\u1ebft b\u1ecb h\u1ecfng, m\u00e0 do: \u0110i\u1ec1u ki\u1ec7n bi\u1ec3n \u0111\u1eb7c bi\u1ec7t (n\u01b0\u1edbc l\u1ea1nh, \u0111\u00e1y s\u00e2u, d\u00f2ng ng\u1ea7m) M\u1eb7t transducer b\u1ecb h\u00e0, b\u00e1m b\u1ea9n C\u1ea5u h\u00ecnh kh\u00f4ng t\u1ed1i \u01b0u (Track Depth sai, Offset kh\u00f4ng ch\u1ec9nh) V\u00ec v\u1eady, \u0111\u1eebng v\u1ed9i thay thi\u1ebft b\u1ecb \u2013 tr\u01b0\u1edbc ti\u00ean h\u00e3y ki\u1ec3m tra k\u1ef9 c\u00e1c y\u1ebfu t\u1ed1 tr\u00ean v\u00e0 s\u1eed d\u1ee5ng fallback GPS nh\u01b0 ph\u01b0\u01a1ng \u00e1n d\u1ef1 ph\u00f2ng. K\u1ebft lu\u1eadn Doppler Speed Log l\u00e0 h\u1ec7 th\u1ed1ng \u0111o t\u1ed1c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 tin c\u1eady, nh\u01b0ng kh\u00f4ng th\u1ec3 \u201cmi\u1ec5n nhi\u1ec5m\u201d v\u1edbi \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf. Vi\u1ec7c hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u1ea5u h\u00ecnh \u0111\u00fang v\u00e0 c\u00f3 quy tr\u00ecnh x\u1eed l\u00fd khi m\u1ea5t t\u00edn hi\u1ec7u l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng \u0111\u1ecbnh v\u1ecb tr\u00ean t\u00e0u ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c v\u00e0 ch\u00ednh x\u00e1c. Li\u00ean h\u1ec7 ngay v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 nh\u1eadn t\u01b0 v\u1ea5n chi ti\u1ebft !\u00a0097 800 1968 (DT\/Zalo) Link : Video Unbox S\u1ea3n Ph\u1ea9m S\u1ea3n ph\u1ea9m\u00a0 IMO : VR: NK BV ABS CCS &nbsp;<\/p>","protected":false},"author":1,"featured_media":4803,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158],"tags":[],"class_list":["post-4802","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-update-news"],"_links":{"self":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts\/4802","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/comments?post=4802"}],"version-history":[{"count":2,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts\/4802\/revisions"}],"predecessor-version":[{"id":4846,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/posts\/4802\/revisions\/4846"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/media\/4803"}],"wp:attachment":[{"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/media?parent=4802"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/categories?post=4802"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/antoanhanghai.com\/en\/wp-json\/wp\/v2\/tags?post=4802"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}