# What is a boat anchorage?

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## What is ship anchorage?

An anchorage is a location at sea where ships can lower anchors. … The purpose of resting a ship at sea securely can be for waiting to enter ports, as well as taking on cargo or passengers where insufficient port facilities exist.

## What does anchorage area mean?

An anchorage area is a place where boats and ships can safely drop anchor. These areas are created in navigable waterways when ships and vessels require them for safe and responsible navigation.

## What does 3 shackles in the water mean?

1 shackle = a length of cable or chain equal to 15 fathoms (90 feet or 27.432 meter). “3 shackles in the water” means that a ship has passed 3 shackles (of anchor chain) into the water. It relates to the turning circle a a ship at anchor has.

## How deep can you anchor?

Depending on sea conditions, you can anchor up to 100 ft depth with 200 ft of line in the water. In calm conditions with minimal current, you will use a ratio of 2:1, anchor line to water depth. In swift current, you may need up to 7:1 in anchor line to water depth.

## What size anchor do I need for a 20 foot boat?

As a general rule, a holding power of 90 pounds is sufficient for safely anchoring a 20′ boat in winds up to 20 mph. For the same wind speed a holding power of 125 pounds is adequate for a 25′ boat.