Object Class: Two-way route part

Acronym: TWRTPT (A)

Code: 152

Set Attribute_A: CATTRK; DATEND; DATSTA; DRVAL1; DRVAL2; *ORIENT; QUASOU; SOUACC; STATUS; TECSOU; *TRAFIC; VERDAT;

Set Attribute_B: INFORM; NINFOM; NTXTDS; SCAMAX; SCAMIN; TXTDSC;

Set Attribute_C: RECDAT; RECIND; SORDAT; SORIND;

Definition:

A two-way route is a route within defined limits inside which two-way traffic is established, aimed at providing safe passage of ships through waters where navigation is difficult or dangerous. (IHO Dictionary, S-32, 5th Edition, 5712)

A two-way route part is an area of a two-way route within which traffic flow is generally along one bearin g (and possibly its reciprocal).

References:

INT 1: IM 28.2;

S-4: 435.6;

Remarks:

The complete two-way route consists of one or more parts depending on the shape of the two-way route .

The orientation of the two-way route part is defined by its centerline and is related to the general direction of the two-way route.

Distinction: deep water route part; recommended traffic lane part; traffic separation scheme lane part;