46 C.F.R. § 401.400 – Calculation of pilotage units and determination of weighting factor.

The equivalent pilotage unit number and appropriate weighting factor for each ship must be computed by utilizing the following formula and table:

(a) Pilotage unit computation:
Pilot Unit = (Length × Breadth × Depth)/283.17 (measured in meters)
Pilot Unit = (Length × Breadth × Depth)/10,000 (measured in feet)
(b) Weighting factor table:
Range of pilotage units Weighting factor
0-49 1.0
50-159 1.15
160-189 1.30
190-and over 1.45
(c) The charge for pilotage service is obtained by multiplying the weighting factor, obtained from paragraph (b) of this section by the appropriate basic rate specified in §§ 401.405, 401.407, 401.410, 401.420 and 401.425.

Range of pilotage units	Weighting factor
0-49	1.0
50-159	1.15
160-189	1.30
190-and over	1.45

[CGFR 70-29a, 35 FR 10434, June 26, 1970, as amended by CGD 81-088; 47 FR 13808, Apr. 1, 1982; CGD 84-089, 50 FR 7178, Feb. 27, 1985. Redesignated and amended at 61 FR 32655, June 25, 1996; 62 FR 5922, Feb. 10, 1997. Redesignated and amended by USCG-1998-3976, 63 FR 35139, 35140, June 29, 1998; USCG-2013-0534, 79 FR 12107, Mar. 4, 2014; USCG-2022-0025, 89 FR 76351, Sept. 17, 2024]