Z

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Zig-zag test

Source page ref: 367
A standard manoeuvring trial in which the rudder is put over alternately to each side at set heading changes, used to assess a ship's yaw-checking and course-changing ability under the IMO manoeuvring standards. IMO-grounded

Zinc

Source page ref: 655
A metal used for galvanising and as sacrificial anodes to protect steel from corrosion.

Zinc anode

Added — maritime supplement
A block of zinc, or another sacrificial metal, attached to a ship's hull and other underwater metal to protect them from galvanic corrosion. The anode corrodes preferentially, sparing the protected steel, and forms part of a vessel's cathodic protection system.

Zinc silicate paints

Source page ref: 655
Coatings using a zinc-rich silicate binder that protect steel both as a barrier and by the sacrificial action of the zinc, used as primers and in tanks.

ZODIAC

Source: Chartering & Shipping Terms Glossary
A rubber dinghy. An inflatable craft for the transport of people.

ZONE

Source: Chartering & Shipping Terms Glossary
Area, belt or district extending about a certain point defined for transport and/ or charge purpose.

Zone Haulage Rate

Source: Chartering & Shipping Terms Glossary
The rate for which the carrier will undertake the haulage of goods or contai- ners between either the place of delivery and the carrier’s appropriate terminal. Such haulage will be undertaken only subject to the terms and conditions of the tariff and of the carrier’s Combined Transport Bill of Lading.

ZONE IMPROVEMENT PLAN (ZIP)

Source: Chartering & Shipping Terms Glossary
System to simplify sorting and delivery of mail, consisting of a number of five digits (the so-called ZIP-code) for identification of the state, city or district, and the postal zone in the U.S.A. delivery areas.