---
kind: "section"
citation: "46 C.F.R. § 13.107"
title: "46"
number: "13.107"
heading: "Tank vessel endorsements: General."
url: "https://uscodex.org/cfr/46/13.107"
---

# §13.107. Tank vessel endorsements: General.

- (a) If an applicant meets the requirements of [subpart B](/cfr/46/subpartB.md) of this part, the Coast Guard may endorse their MMC as Tank Vessel-PIC with the appropriate cargo classification or classifications. A person holding this endorsement and meeting the other requirements of [33 CFR 155.710(a)](/cfr/33/155.710.md?p=a) may act as a PIC of a transfer of fuel oil, of a transfer of liquid cargo in bulk, or of cargo-tank cleaning on any tank vessel. That person may also act as a Tank Vessel-Engineer, provided they also hold an engineer officer endorsement.
- (b) If an applicant meets the requirements of [subpart C](/cfr/46/subpartC.md) of this part, the Coast Guard may endorse their MMC as Tank Barge-PIC with the appropriate cargo classification or classifications. A person holding this endorsement and meeting the other requirements of [33 CFR 155.710(b)](/cfr/33/155.710.md?p=b) may act as a PIC of a transfer of liquid cargo in bulk only on a tank barge.
- (c) If an applicant meets the requirements of subpart D of this part, the Coast Guard may endorse their MMC as Tank Vessel-Assistant with the appropriate cargo classification or classifications. No person holding this endorsement may act as a PIC of any transfer of fuel oil, of any transfer of liquid cargo in bulk, or of cargo-tank cleaning unless they also hold an endorsement authorizing service as PIC. They may, however, without being directly supervised by the PIC, perform duties relative to cargo and cargo-handling equipment assigned by the PIC of transfers of fuel oil, of transfers of liquid cargo in bulk, or of cargo-tank cleaning. When performing these duties, they must maintain continuous two-way voice communications with the PIC.
- (d) If an applicant meets the requirements of [subpart E](/cfr/46/subpartE.md) of this part, the Coast Guard may endorse their MMC as Tank Vessel-Engineer. No person holding this endorsement may act as a PIC or Tank Vessel-Assistant of any transfer of liquid cargo in bulk, or of cargo-tank cleaning unless they also hold an endorsement authorizing such service. A person holding this endorsement and acting in this capacity has the primary responsibility, on their self-propelled tank vessel carrying dangerous liquid (DL) or liquefied gas (LG), for maintaining both the cargo systems and equipment for transfer of liquid cargo in bulk. No person credentialed under [part 11](/cfr/46/part11.md) of this chapter may serve as a Chief Engineer, First Assistant Engineer, or Cargo Engineer aboard an inspected self-propelled tank vessel when liquid cargo in bulk or cargo residue is carried unless they hold an endorsement as Tank Vessel-Engineer or equivalent.
- (e) If an applicant meets the requirements of [§ 13.111](/cfr/46/13.111.md), the Coast Guard may place, on their MMC, an endorsement as a Tank Vessel-PIC restricted according to the definitions of “restricted tank vessel endorsement” in [§ 10.107](/cfr/46/10.107.md) of this subchapter.
- (f) This section does not apply to any person solely by reason of their involvement in bunkering or fueling.

## Notes

### Amendments

[CGD 79-116, 60 FR 17142, Apr. 4, 1995, as amended by CGD 79-116, 62 FR 25127, May 8, 1997; USCG-2008-0906, 73 FR 56508, Sept. 29, 2008; USCG-2006-24371, 74 FR 11259, Mar. 16, 2009; USCG-2004-17914, 78 FR 77988, Dec. 24, 2013]

### Authority

Authority: 46 U.S.C. 3703, 7317, 8105, 8703, 9102; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 79-116, 60 FR 17142, Apr. 4, 1995, as amended by USCG-2021-0097, 89 FR 93106, Nov. 25, 2024, unless otherwise noted.

### Amendments

[CGD 79-116, 60 FR 17142, Apr. 4, 1995, as amended by CGD 79-116, 62 FR 25127, May 8, 1997; USCG-2008-0906, 73 FR 56508, Sept. 29, 2008; USCG-2006-24371, 74 FR 11259, Mar. 16, 2009; USCG-2004-17914, 78 FR 77988, Dec. 24, 2013]