{"id":46853,"date":"2025-12-24T18:20:13","date_gmt":"2025-12-24T18:20:13","guid":{"rendered":"https:\/\/maritimehub.co.uk\/?page_id=46853"},"modified":"2025-12-24T18:20:13","modified_gmt":"2025-12-24T18:20:13","slug":"calculators-data-sheets","status":"publish","type":"page","link":"https:\/\/maritimehub.co.uk\/calculators-data-sheets\/","title":{"rendered":"Calculators & Data Sheets"},"content":{"rendered":"\n

For Calculators & Data Sheets<\/strong> (Engines & Prime Movers), I\u2019d make it a \u201ctoolbox\u201d page that feels like a proper engineer\u2019s console: quick inputs at the top, results instantly, and each tool links to a matching data sheet \/ reference card<\/strong> underneath.<\/p>\n\n\n\n

Page layout (MaritimeHub-style)<\/h2>\n\n\n\n
    \n
  1. Top strip:<\/strong> \u201cMost used\u201d calculators (6\u201310 tiles) + search bar<\/li>\n\n\n\n
  2. Tabs:<\/strong> Engines | Generators | Fuel & Emissions | Air & Starting | Cooling | Lube Oil | Performance | Electrical\/Hybrid<\/li>\n\n\n\n
  3. Each tool section:<\/strong> Calculator + Worked Example + Downloadable data sheet + Common faults<\/li>\n\n\n\n
  4. Right column:<\/strong> ads + \u201cQuick reference\u201d cards (units, conversions, alarm limits)<\/li>\n<\/ol>\n\n\n\n
    \n\n\n\n

    Must-have calculators (Engines & Prime Movers)<\/h2>\n\n\n\n

    A) Core engine performance<\/h3>\n\n\n\n
      \n
    • Power \/ Torque \/ RPM converter<\/strong> (kW \u2194 HP \u2194 BHP, Torque Nm)<\/li>\n\n\n\n
    • SFOC \/ Fuel burn<\/strong> (g\/kWh \u2192 kg\/h, t\/day at load)<\/li>\n\n\n\n
    • Load % \/ MCR calculator<\/strong> (actual kW vs MCR)<\/li>\n\n\n\n
    • Propeller law calculator<\/strong> (P \u221d n\u00b3, Q \u221d n\u00b2, speed relationships)<\/li>\n\n\n\n
    • Cylinder power balance (indicator\/EGT proxy)<\/strong> (simple balancing tool)<\/li>\n\n\n\n
    • Brake mean effective pressure (BMEP)<\/strong> (4-stroke + 2-stroke variants)<\/li>\n<\/ul>\n\n\n\n

      B) Fuel, energy, and emissions<\/h3>\n\n\n\n
        \n
      • CO\u2082 emissions from fuel burn<\/strong> (t\/day \u2192 tCO\u2082\/day; voyage total)<\/li>\n\n\n\n
      • NOx \u201ctier awareness\u201d helper<\/strong> (not a cert tool\u2014just operational guidance)<\/li>\n\n\n\n
      • LNG \/ methanol \/ MGO energy equivalence<\/strong> (LHV-based comparison)<\/li>\n\n\n\n
      • Fuel blending \/ viscosity \/ temperature<\/strong> (HFO\/MGO changeover assistant)<\/li>\n\n\n\n
      • CII \/ EEOI rough calculator<\/strong> (operational estimate)<\/li>\n<\/ul>\n\n\n\n

        C) Starting air \/ combustion air (big for marine)<\/h3>\n\n\n\n
          \n
        • Starting air receiver sizing \/ endurance<\/strong> (starts available at pressure range)<\/li>\n\n\n\n
        • Air consumption per start<\/strong> (rule-of-thumb + manufacturer input option)<\/li>\n\n\n\n
        • Scavenge air pressure\/boost sanity checks<\/strong><\/li>\n\n\n\n
        • Turbocharger compressor \u0394T \/ efficiency quick check<\/strong> (basic)<\/li>\n<\/ul>\n\n\n\n

          D) Cooling system<\/h3>\n\n\n\n
            \n
          • Heat rejection estimate<\/strong> (from fuel energy \u2192 JW\/SW load split)<\/li>\n\n\n\n
          • Cooler duty \/ flow rate<\/strong> (Q = m\u00b7Cp\u00b7\u0394T)<\/li>\n\n\n\n
          • Expansion tank \/ header tank volume<\/strong><\/li>\n\n\n\n
          • Glycol mix ratio<\/strong> (freeze point, corrosion protection)<\/li>\n<\/ul>\n\n\n\n

            E) Lube oil and filtration<\/h3>\n\n\n\n
              \n
            • Oil pump flow vs pressure sanity tool<\/strong><\/li>\n\n\n\n
            • Bearing clearance \u201crisk band\u201d helper<\/strong> (input clearance \u2192 warning band)<\/li>\n\n\n\n
            • Centrifuge throughput \/ settling time<\/strong><\/li>\n\n\n\n
            • Filter \u0394P trend tracker<\/strong> (log + alarm threshold suggestions)<\/li>\n<\/ul>\n\n\n\n

              F) Generators & prime movers (electrical side)<\/h3>\n\n\n\n
                \n
              • kVA \u2194 kW \u2194 PF calculator<\/strong><\/li>\n\n\n\n
              • Load sharing \/ droop calculator<\/strong> (simple % sharing)<\/li>\n\n\n\n
              • Cable sizing quick check<\/strong> (basic current + derating assumptions)<\/li>\n\n\n\n
              • Battery bank sizing<\/strong> (starter batteries + hybrid ESS basics)<\/li>\n\n\n\n
              • Harmonics \/ VFD \u201crules of thumb\u201d card<\/strong> (not deep analysis, just field guidance)<\/li>\n<\/ul>\n\n\n\n

                G) Compression & diagnostics<\/h3>\n\n\n\n
                  \n
                • Compression ratio \/ compression pressure estimator<\/strong> (rule-of-thumb)<\/li>\n\n\n\n
                • Exhaust temperature deviation alarm tool<\/strong> (per-cylinder variance)<\/li>\n\n\n\n
                • Vibration severity quick check<\/strong> (ISO-style reference card, not certification)<\/li>\n<\/ul>\n\n\n\n
                  \n\n\n\n

                  Data sheets (what should be downloadable \/ viewable)<\/h2>\n\n\n\n

                  1) \u201cOperating limits\u201d cards (gold for engineers)<\/h3>\n\n\n\n
                    \n
                  • Normal ranges and alarms for:\n
                      \n
                    • LO pressure\/temperature<\/li>\n\n\n\n
                    • JW in\/out temperatures<\/li>\n\n\n\n
                    • Exhaust temp ranges (and delta between cylinders)<\/li>\n\n\n\n
                    • Scavenge pressure<\/li>\n\n\n\n
                    • Start air pressures<\/li>\n\n\n\n
                    • Fuel supply pressures (common rail + mechanical)<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                    • Include: Normal \/ Caution \/ Trip<\/strong> bands<\/li>\n<\/ul>\n\n\n\n

                      2) \u201cPrime mover one-pagers\u201d<\/h3>\n\n\n\n

                      For each engine type (2-stroke slow speed, 4-stroke medium, high-speed genset):<\/p>\n\n\n\n

                        \n
                      • Cycle basics + timing overview<\/li>\n\n\n\n
                      • Key components & failure modes<\/li>\n\n\n\n
                      • Typical maintenance intervals<\/li>\n\n\n\n
                      • Common alarms + what they mean<\/li>\n\n\n\n
                      • Quick troubleshooting flow (start \/ smoke \/ power \/ LO \/ temp)<\/li>\n<\/ul>\n\n\n\n

                        3) Fuel property sheets (engine-room practical)<\/h3>\n\n\n\n
                          \n
                        • LHV, density, viscosity @ temp, flash point, pour point<\/li>\n\n\n\n
                        • Changeover notes (thermal shock, viscosity controller)<\/li>\n\n\n\n
                        • Compatibility notes (cat fines, water, microbial)<\/li>\n<\/ul>\n\n\n\n

                          4) Hybrid\/electric quick references (if you\u2019re including those sections)<\/h3>\n\n\n\n
                            \n
                          • Battery chemistries (LFP\/NMC) pros\/cons<\/li>\n\n\n\n
                          • ESS safety checklist (thermal runaway signs, ventilation)<\/li>\n\n\n\n
                          • DC bus vs AC bus \u201cwhat changes for faults\u201d<\/li>\n\n\n\n
                          • Shore power checklist (sync, interlocks, earthing)<\/li>\n<\/ul>\n\n\n\n

                            5) \u201cConversions & constants\u201d<\/h3>\n\n\n\n
                              \n
                            • kW\/hp, kWh\u2192MJ, bar\/psi, \u00b0C\/\u00b0F<\/li>\n\n\n\n
                            • Cp values for water\/glycol<\/li>\n\n\n\n
                            • CO\u2082 factors by fuel type (clearly labeled as estimates)<\/li>\n<\/ul>\n\n\n\n
                              \n\n\n\n

                              \u201cMake it feel live\u201d features (high impact)<\/h2>\n\n\n\n
                                \n
                              • Save as PDF<\/strong> button for each data sheet<\/li>\n\n\n\n
                              • Logbook mode:<\/strong> store last 20 runs (inputs\/results) per calculator<\/li>\n\n\n\n
                              • Share link:<\/strong> generates a URL with pre-filled values (handy onboard)<\/li>\n\n\n\n
                              • Trend widgets:<\/strong> paste 7 days of readings \u2192 auto flags abnormal drift<\/li>\n\n\n\n
                              • Model presets:<\/strong> \u201cMAN B&W 6S60\u201d, \u201cW\u00e4rtsil\u00e4 46\u201d, \u201cCAT 3516\u201d (you can add over time)<\/li>\n<\/ul>\n\n\n\n
                                \n\n\n\n

                                What I\u2019d put on the actual page (sections)<\/h2>\n\n\n\n
                                  \n
                                • Featured calculators<\/strong> (tiles)<\/li>\n\n\n\n
                                • All calculators A\u2013G<\/strong> (accordion list)<\/li>\n\n\n\n
                                • Data sheets library<\/strong> (filterable cards)<\/li>\n\n\n\n
                                • Quick reference<\/strong> (sticky right column)<\/li>\n\n\n\n
                                • Changelog<\/strong> (engineers love knowing what changed)<\/li>\n<\/ul>\n\n\n\n

                                  <\/p>\n","protected":false},"excerpt":{"rendered":"

                                  For Calculators & Data Sheets (Engines & Prime Movers), I\u2019d make it a \u201ctoolbox\u201d page that feels like a proper engineer\u2019s console: quick inputs at the top, results instantly, and each tool links to a matching data sheet \/ reference card underneath. Page layout (MaritimeHub-style) Must-have calculators (Engines & Prime Movers) A) Core engine performance […]<\/p>\n","protected":false},"author":199,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"c2c-post-author-ip":"","footnotes":""},"class_list":["post-46853","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/users\/199"}],"replies":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fcomments&post=46853"}],"version-history":[{"count":1,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46853\/revisions"}],"predecessor-version":[{"id":46854,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46853\/revisions\/46854"}],"wp:attachment":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fmedia&parent=46853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}