{"product_id":"ecdis-safety-settings-and-ukc-management-3rd-edition-2026","title":"ECDIS Safety Settings and UKC Management, 3rd Edition 2026","description":"\u003ch4\u003eShort Overview\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThis publication is a guide to ECDIS safety setting and under keel clearance (UKC) management. This booklet aims to provide a deeper insight into the principal Electronic Chart Display and Information Systems (ECDIS) safety settings and provide guidance to ensure they are understood by the ECDIS operator. It explains how underkeel clearance (UKC) should be calculated and effectively managed by the navigator.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eDetailed Overview\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003ePart One outlines how safety settings can be understood by the ECDIS operator. The essential ECDIS safety settings outlined include display, safety contour and depth, shallow and deep contour, isolated danger, detection area\/safety frame and route check\/cross track distance (XTD).\u003c\/p\u003e\n\u003cp\u003ePart Two details how UKC should be calculated and effectively managed on board ships. Having a UKC plan allows the safety settings to be readily reviewed at any stage of the voyage.\u003c\/p\u003e\n\u003cp\u003ePart Three includes worked examples to illustrate the limitations of ENCs in relation to safety settings. Each scenario demonstrates the various tidal calculations and their relationship to ECDIS safety settings.\u003c\/p\u003e\n\u003ch4\u003eIntroduction\u003c\/h4\u003e\n\u003cp\u003eThis booklet aims to provide a deeper insight into the principal Electronic Chart Display and Information Systems (ECDIS) safety settings and provide guidance to ensure they are understood by the ECDIS operator. It explains how underkeel clearance (UKC) should be calculated and effectively managed by the navigator.\u003c\/p\u003e\n\u003cp\u003eThe information contained here is not a substitute for correct adherence to company safety management system (SMS) requirements or the manufacturer's own operational manuals.\u003c\/p\u003e\n\u003cp\u003eECDIS safety settings must be configured correctly to ensure sufficient UKC, to ensure correct interpretation of the Electronic Navigational Charts (ENC) and to ensure that charted objects on the ENC are properly identified by the ECDIS as dangers or hazards to navigation.\u003c\/p\u003e\n\u003cp\u003eThe essential ECDIS safety settings to understand include:\u003c\/p\u003e\n\u003cp\u003e- Display settings\u003c\/p\u003e\n\u003cp\u003e- Safety Contour\u003c\/p\u003e\n\u003cp\u003e- Safety Depth\u003c\/p\u003e\n\u003cp\u003e- Shallow Contour\u003c\/p\u003e\n\u003cp\u003e- Deep Contour\u003c\/p\u003e\n\u003cp\u003e- Isolated Danger (symbols and attributes)\u003c\/p\u003e\n\u003cp\u003e- detection area\/safety frame\u003c\/p\u003e\n\u003cp\u003e- route check\/cross track distance (XTD).\u003c\/p\u003e\n\u003cp\u003eSafety settings (particularly the Safety Depth and the Safety Contour input values) must be calculated correctly during the passage planning stage. Prior to sailing, the ECDIS operator must ensure that settings are entered and remain appropriate for the duration of the voyage.\u003c\/p\u003e\n\u003cp\u003eCorrect safety settings are essential for safe navigation. While underway, it is important to ensure that the ECDIS safety settings are verified as correct during every watch.\u003c\/p\u003e\n\u003cp\u003eWhen configured correctly, the ECDIS will alarm when the ship approaches shallow waters, crosses the Safety Contour or approaches other hazards to navigation.\u003c\/p\u003e\n\u003cp\u003eIt is important to be aware that the main tool used to clearly distinguish between safe and unsafe water remains the 'no-go' areas, defined by the ECDIS operator and applied using the 'danger attribute' function.\u003c\/p\u003e\n\u003cp\u003eWhen navigating within the Safety Contour, the ECDIS operator must ensure that Isolated Dangers are displayed.\u003c\/p\u003e\n\u003ch4\u003eContent Listings\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e\u003cb\u003eChapter 1 - ECDIS Safety Settings\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.1 Introduction\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.1.1 ECDIS Standards\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.2 ECDIS Alerts\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.2.1 Alert Management\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.3 Chart Accuracy and Data Quality\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.3.1 CATZOCs\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.3.2 CATZOC Passage Planning Examples\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.3.3 Case Study - 'Kea Trader'\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.4 ECDIS Display Settings\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.4.1 Display Base\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.4.2 Standard Display\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.4.3 All\/Other\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.4.4 Custom Display\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.4.5 Further ENC Settings\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.5 Safety Contour\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.5.1 Safety Contour Worked Example\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.6 Safety Depth\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.7 Shallow Contour and Deep Contour\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.7.1 Use of ECDIS in Two Colour\/Four Colour Depth Shading Mode\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.8 Isolated Dangers\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.8.1 Isolated Danger Shallower than the Safety Contour\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.8.2 Isolated Danger in Shallow Waters\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.9 Detection Area\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.10 Route Check\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.10.1 Configuration of the Route Check\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e1.11 Bridge Team Meeting and Master's Approval\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e\u003cb\u003eChapter 2 – UKC Management\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.1 Introduction\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.1.1 UKC Requirements\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.1.2 Dynamic UKC Requirements\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.2 UKC Considerations\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.3 Squat\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.4 Height of Tide (HoT)\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.5 UKC Calculations\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.5.1 Vertical Clearance\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.6 UKC Management Plan\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.6.1 Authorities with Minimum UKC Requirements\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.6.2 S-129 and UKC Management Service Providers\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.7 UKC Parameters on ECDIS\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.7.1 Passage Planning Calculation Example\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.8 UKC Monitoring\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e2.8.1 Monitoring UKC in Coastal Waters\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e\u003cb\u003eChapter 3 - Safety Contour - Worked Examples\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e3.1 Worked Examples\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e3.2 Further Guidance\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e \u003c\/p\u003e\n\u003ch4 class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003eAdditional Information\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 0in; line-height: normal;\"\u003e \u003c\/p\u003e\n\u003cdiv\u003eNumber of Pages:\u003cspan\u003e \u003c\/span\u003e118\u003c\/div\u003e\n\u003cdiv\u003ePublished Date:\u003cspan\u003e \u003c\/span\u003eMarch 2026\u003c\/div\u003e\n\u003cdiv\u003eBook Height:\u003cspan\u003e \u003c\/span\u003e210 mm\u003c\/div\u003e\n\u003cdiv\u003eBook Width:\u003cspan\u003e \u003c\/span\u003e150 mm\u003c\/div\u003e\n\u003cdiv\u003eWeight:\u003cspan\u003e \u003c\/span\u003e1 kg\u003c\/div\u003e","brand":"Witherby Seamanship International","offers":[{"title":"Hardcopy","offer_id":47638165586165,"sku":"9781918144222","price":39.95,"currency_code":"USD","in_stock":true},{"title":"eBook","offer_id":47638165618933,"sku":"9781918144222EB","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0090\/5072\/files\/ecdis-safety-settings-and-ukc-management-3rd-edition-2026-1221902298.jpg?v=1771618928","url":"https:\/\/www.amnautical.com\/products\/ecdis-safety-settings-and-ukc-management-3rd-edition-2026","provider":"American Nautical Services","version":"1.0","type":"link"}