CHALIM
INFORMATION OBJECT CLASS
Information Object: Characteristics of vessels which cause limitations
Acronym: CHALIM Code: ?
Camel case: CharacteristicsOfVesselsCausingLimitations
Set Attribute_A: BALAST; CATCGO; CATDHC;CATRGY; CATVSL; DATEND; DATSTA; ICECAP; LOGCON; MAXAIR; MAXBRD; MAXDPL; MAXDRF; MAXDWT; MAXGTN; MAXLOA; MAXNTN; MINDPL; MINDRF; MINDWT; MINGTN; MINLOA; MINNTN; N0BJNM; OBJNAM; OPERAT; PEREND; PERSTA; PRFMNC;
UKCLRN
Set Attribute_B: INFORM; NINFOM;
Set Attribute_C: RECDAT; RECIND; SORDAT; SORIND;
Associated information object classes: NATINF; RCMDTS; REGLTS; RESDES;
Definition:
Characteristics of vessels (by construction, cargo or performance), which limit the passage of vessels, or the use by vessels, of an area or facility.
References:
INT 1: M-3: Chapter C, Section C 3.3 M-4:
Remarks:
This object is used to describe the characteristics of vessels, which limit the passage of a vessel, or the use of a facility by a vessel because the vessel is:
• carrying ballast water.
• matches one of the values in the ship type, cargo type or dangerous or harzardous cargo type attributes;
• or does not match the performance requirements;
• or exceeds one of the “max” attributes or;
• or is less than one of the “min” attributes.
As an example of how this information object could be used, ship dimensions or type of cargo could be used in combination with a related geographic object, in which regulations (e.g. length limit or type of cargo restrictions) apply.
This object is used to describe the characteristics of vessels, which limit the passage of a vessel, or the use of a facility by a vessel, because the vessel is:
- carrying ballast water.
- matches one of the values in the ship type, cargo type or dangerous or hazardous cargo type attributes;
- or does not match the performance requirements;
- or exceeds one of the “max” attributes or;
- or is less than one of the “min” attributes.
If we introduce logical connectives (see discussion in OPERAT and new drafted attribute LOGCON) the Remarks should be updated. Here is a tentative revision of the Remarks:
This object is used to describe the characteristics of vessels, which limit the passage of a vessel, or the use of a facility by a vessel. The characteristics of individual vessels are compared to values of CHALIM attributes to produce Boolean values as specified below (missing attributes or null-valued attributes are ignored and not used in evaluation):
- BALAST: TRUE if the vessel is carrying ballast water, FALSE if it is not.
- Category attributes: TRUE if the vessel (or its cargo) match any of the values of the attribute, FALSE if it does not. (Note that some CAT- attributes may have multiple values - see examples.)
- Performance attribute (PRFMNC): TRUE if the vessel does not meet the requirements described in the performance text string, FALSE otherwise.
- Ice capacity: TRUE if the vessel cannot transit ice of the specified thickness, FALSE if it can.
- Under-keel clearance: TRUE if the vessel does not have the required under-keel clearance, FALSE if it does.
- MAX- attributes: TRUE if the vessel characteristic exceeds the given value, FALSE otherwise.
- MIN- attributes: TRUE if the vessel characteristic is less the given value, FALSE otherwise.
The resulting Boolean values are combined using the logical connective specified by LOGCON. If the result is TRUE the vessel is included in the limitation described by this CHALIM.
Example:
MAXLOA=50.0, CATVSL=3 (tanker), LOGCON=1 (and): tankers with LOA > 50.0 m.
MAXLOA=50.0, CATVSL=3, LOGCON=2 (or): tankers, or any vessel with LOA > 50.0 m.
MAXLOA=50.0, MINLOA=90.0, LOGCON=2 (and): vessels with LOA between 50.0 and 90.0 m.
MAXLOA=90.0, MINLOA=50.0, LOGCON=2 (and): vessels with LOA over 90.0 and less than 50.0 (a logical impossibility).
CATCGO=5,6, ICECAP=080, LOGCON=2 (or): all vessels carrying either passengers, livestock or both and vessels carrying anything but capable of transiting only 80 cm or thinner ice
As an example of how this information object could be used, ship dimensions or type of cargo could be used in combination with a related geographic object, in which regulations (e.g. length limit or type of cargo restrictions) apply.
Distinction:
No distinctions.
| David | Ricardo | Rolando | Jens |
|---|---|---|---|
| Y/N | RF Y/N | RR Y/N | Y/N |