For US Waters Under Keel Clearance Ref. Regulations 33 CFR 157.455
Prior to completing this form 33 CFR 157.455 must be read and thoroughly understood.
Under Keel Clearance Calculation
Port
Date
Time
Section 1 – Deepest Navigational Draft
Facility
Anchorage
Transit Area
1
Mean Draft
Metres/Feet
2
Trim
Metres/Feet
3
Increase Draft Due List
Metres/Feet
4
Intended Transit Speed
Knots
5
Anticipated Squat
Metres/Feet
6
FW/DW Allowance
Metres/Feet
7
Corrected Maximum Draft
Metres/Feet
Section 2 – Anticipated Controlling Depth
Facility
Anchorage
Transit Area
8
Chart Depth
Metres/Feet (Min)
9
Height of Tide
Metres/Feet (+ or -)
10
Sea State
Metres/Feet (+ or -)
11
Past Weather Impact
Metres/Feet (+ or -)
12
Controlling Depth
Metres/Feet
* or listed controlling depth from latest Data
Section 3 – Anticipated Under Keel Clearance
Facility
Anchorage
TransitArea
7
Maximum Draft
Metres/Feet
12
Controlling Depth
Metres/Feet
13
Under Keel Clearance
Metres/Feet
Port UKC Requirements
Metres/Feet
Complies
Yes/No
Master
Pilot
Date
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