Description
Encode a sounding or drying height under a supplied datum-sign convention.
Nautical quantities require explicit north, datum, sign, station and unit conventions. A wrapped bearing error has a chosen opposite-direction endpoint, while a circular sector has its own start and end policy. Supplied polar speeds, tank factors and tide labels are references rather than verified navigation or vessel conditions.
Encode a sounding or drying height under a supplied datum-sign convention.
When to use this tool
Use Chart Sounding Drying Height Sign when you already have magnitude, isDryingHeight, positiveMeansDepth and need to encode a sounding or drying height under a supplied datum-sign convention.
How to use the tool and how it works
- Enter magnitude, isDryingHeight, positiveMeansDepth. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedOrdinate. Use the output convention below.
Require magnitude>=0; positiveMeansDepth selects whether depth or drying height is positive, and isDryingHeight selects the type.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| magnitude | Magnitude | Required. Finite number; minimum 0. |
| isDryingHeight | Is Drying Height | Required. Boolean. |
| positiveMeansDepth | True gives positive depths and negative drying heights; false reverses that convention. | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedOrdinate | Signed Ordinate | Required. Finite number. |
{
"input": {
"magnitude": 2,
"isDryingHeight": false,
"positiveMeansDepth": true
},
"output": {
"signedOrdinate": 2
}
}Limitations and assumptions
- No datum, tide, seabed, water depth or safe clearance is measured or selected.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use verified charts, observations, vessel documentation and the complete relevant geometric or hydrostatic model for a navigational question. Preserve the local bearing/datum convention and treat scalar factors or sector checks as limited inputs rather than operational decisions.
References
Similar or alternative tools
- Tank Sounding Volume Factor Apply
Apply a supplied correction multiplier to a tank-table volume.
- Compass Deviation East West Token
Encode an east/west compass-deviation magnitude under a supplied sign convention.