Work it out.
Calculators
Slinging: WLL at sling angle
EN 818-4 / EN 13414 (belastningsfaktor)
Tie-down lashing: number of lashings
EN 12195-1 (ned-surring)
Forklift truck: capacity at load centre
Lastmoment-princip (typeskilt / EN ISO 3691-1)
VGM: verified gross mass of a container
SOLAS kap. VI, regel 2 (VGM, IMO 2016)
Container stacking: max. number in a stack
CSC-konventionen (containerens CSC-/sikkerhedsplade, 1,8g)
Container: fill rate (CBM)
ISO 668 (containermål) / Geometri
Number of EUR pallets in a container
EN 13698-1 (EUR-pal) + ISO 668 (containermål) / Geometri
Ro-ro ramp: gradient with the tide
Geometri (tidevandskorrektion)
Wind load on a lifted container
Aerodynamisk grundformel (q = ½ρv²) / kranproducent-vindgrænser
Axle load distribution when loading
Momentligevægt / Bekendtgørelse om køretøjers akseltryk
Mooring hawser: safe working load (SWL)
OCIMF Mooring Equipment Guidelines (MEG4) - WLL-faktor
Crane productivity (Gross Crane Rate)
UNCTAD havneproduktivitets-KPI (Gross Crane Rate)
Demurrage: cost of late container return
Rederi-tarif-princip (demurrage/detention)
Under-keel clearance (UKC)
IMO/Søfartsstyrelsen - praksis for Under Keel Clearance (UKC)
Wind force: Beaufort to m/s
Beaufort-skalaen (WMO empirisk formel)
Container depot: space capacity (TEU)
ISO 668 (containerfodaftryk) / Geometri
Load's centre of gravity in container
CTU Code (IMO/ILO/UNECE 2014) + ISO 3874: centre of gravity within ±5% of length
Ship's berth time at quay
Quay productivity: lifts ÷ (cranes × net crane rate) + fixed time (UNCTAD key figures for port productivity)
Bulk cargo: stowage factor and cargo hold
Stowage factor (m³ per ton) from the shipper's cargo statement, cf. IMSBC Code
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.