Exhibit 31.03
CERTIFICATION
I, Roderick A. Larson, principal executive officer of Oceaneering International, Inc., certify that:
| 1. | I have reviewed this Quarterly Report on Form 10-Q of Oceaneering International, Inc. for the quarter ended March 31, 2020; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| 5/27/2020 | /S/ RODERICK A. LARSON | |
| Date | Roderick A. Larson | |
| President and Chief Executive Officer | ||
| (Principal Executive Officer) | ||