Sea Duty Incentive Pay: Eligibility, Rates, and How to Apply

Sea Duty Incentive Pay is a U.S. Navy program that pays eligible enlisted sailors a taxable lump sum for voluntarily taking on extra sea time in undermanned ratings. Monthly rates run from $300 to $1,000, and the lump sum equals that monthly rate multiplied by the number of extra months the sailor agrees to serve, typically 12 to 48 months.¹ The program is open to Active Component and Full-Time Support sailors in pay grades E-4 through E-9 whose rating, Navy Enlisted Classification, pay grade, and sometimes duty location appear on the current SDIP Eligibility Chart.²

The Three SDIP Options

Every SDIP agreement fits one of three options, and each requires a 12- to 48-month commitment.¹

SDIP-Back-to-Back (SDIP-B) is for a sailor finishing a sea tour who volunteers to move straight into another sea billet instead of rotating ashore.
SDIP-Curtailment (SDIP-C) is for a sailor on shore duty who volunteers to leave shore at least six months early and report to sea.
SDIP-Extension (SDIP-E) is for a sailor already at sea who volunteers to stay at the same command past the Prescribed Sea Tour.

The Prescribed Sea Tour is the standard sea tour length the Navy assigns to each rating under Sea Shore Flow, the policy that replaced Sea Shore Rotation in 2008.³ SDIP pays for sea time beyond that baseline, or for sea time that replaces scheduled shore time.

Who Qualifies

Eligibility is not rank-based alone. A sailor must fall inside the combination of rating, NEC, pay grade, and (for some entries) geographic location listed on the SDIP Eligibility Chart. The chart is updated periodically, and the version currently in force took effect October 1, 2025.² For squadron billets, the squadron must be operational with aircraft assigned; for ship billets, the vessel must be commissioned and the sailor part of the ship’s company.⁴

Reserve Component members who are not Full-Time Support are ineligible.¹ Sailors selected through the Senior Enlisted Marketplace, Advance to Position, or similar promotion programs cannot draw SDIP until the promotion tour is finished, and first-tour Command Master Chiefs, Command Senior Chiefs, and Chiefs of the Boat are excluded.⁵ A sailor also cannot collect SDIP and standard Assignment Incentive Pay at the same time, and the enlistment contract must run past the end of the SDIP commitment. Anyone who would hit High Year Tenure before the contract ends is out.

How Much SDIP Pays

Monthly rates follow a rank ladder for most eligible ratings:⁵

E-4: $300 per month
E-5: $400 per month
E-6: $500 per month
E-7: $600 per month
E-8: $700 per month
E-9: $800 per month

High-demand specialties pay more. Nuclear-trained Machinist’s Mates and Electrician’s Mates at E-7, Engineering Department Master Chiefs, certain Fire Controlmen, Hospital Corpsmen holding Independent Duty Corpsman NECs, and several Information Systems Technician specialties draw the $1,000 ceiling. Submarine navigators and certain Electronics Technician NECs draw $900.⁵

The math is straightforward. An E-7 nuclear Machinist’s Mate agreeing to 36 additional months at $1,000 per month receives $36,000 as a single payment. Payments are generally processed within two pay periods after the sailor reports to the sea command (SDIP-B and SDIP-C) or begins the extension (SDIP-E), once signed paperwork is on file.¹ If the command’s homeport changes after the contract is signed, the rate stays locked at the level in effect when the contract was executed.⁴

How To Apply

The request goes on a NAVPERS 1306/7, endorsed by the command and submitted to the sailor’s rating detailer. It has to name the option (SDIP-B, SDIP-C, or SDIP-E), the number of months, and the desired detachment month, and it must be filed before the sailor is selected for a follow-on billet or posted to orders.⁶

For back-to-back requests, the target window is 14 to 16 months before the sailor’s Projected Rotation Date or Prescribed Sea Tour completion, whichever is later. Requests outside that window can still be considered case by case.⁶ Approval comes from the Enlisted Distribution Division, PERS-40. After approval, the sailor has 30 days to sign a NAVPERS 1070/613 (Administrative Remarks), which is the binding contract.¹

What Happens if You Don’t Finish the Commitment

Because the money is paid up front, leaving the contract early triggers recoupment of the unearned portion under 37 U.S.C. § 373.⁷ Common triggers include removal from the billet for misconduct, medical issues, weight-control failure, or physical readiness test failure; permanent transfer before the agreement ends; commissioning; reduction in rate; NEC removal; and being absent without leave or in confinement.¹

Recoupment is generally not pursued when the sailor cannot finish for reasons genuinely outside their control. Disability retirement from a combat-related injury not caused by misconduct, sole-survivor discharge, and death not caused by misconduct are treated as exceptions, and in those cases the remaining unpaid balance is paid to the sailor or the estate rather than clawed back.⁷ If a billet is unfunded or a ship decommissioned, the sailor can avoid repayment by finishing the contract time at another eligible command.¹

Voluntary early release is possible through another NAVPERS 1306/7 with a command endorsement, but the standard is high: “exceptional, unforeseeable circumstances” beyond the sailor’s control. The sailor must sign a statement agreeing to repay unearned money and waiving the right to contest the debt. OPNAV N130 has final approval authority for both early-termination requests and recoupment determinations.¹

Taxes

SDIP is taxable income and is subject to federal and state income tax withholding.¹ One exception matters. If the sailor signs the agreement during a month when they are exempt from federal and state income tax withholding, typically for service in a designated combat zone, the lump-sum payment for that month may be treated as non-taxable. Assignment Incentive Pay, the broader category SDIP sits under, follows the same combat-zone exclusion rule that applies to most military special pays.⁸ Sailors who believe they were taxed in error should have their local pay office contact the Defense Finance and Accounting Service.

SDIP Is Not the Same as Career Sea Pay

Career Sea Pay is a separate entitlement that every sailor assigned to sea duty receives automatically, and Career Sea Pay Premium begins accruing on the 37th consecutive month of sea duty.⁹ SDIP is a voluntary bonus limited to specific undermanned ratings and requires signing on for extra sea time. A sailor drawing CSP and CSP-P can also draw SDIP, but cannot draw SDIP and standard Assignment Incentive Pay together.¹

The statutory authority the Navy uses to run SDIP, 37 U.S.C. § 352, is currently set to expire on December 31, 2026, unless Congress extends it.¹⁰ Sailors considering a longer commitment should check the current eligibility chart before submitting, since the chart drives whether a rating and NEC combination qualifies at all and at what rate.

1
MyNavy HR. SDIP Policy Decision Memorandum 002-21
2
MyNavy HR. Sea Duty Incentive Pay
3
MyNavy HR. Sea Shore Flow
4
MyNavy HR. SDIP Eligibility Chart, October 2025
5
MyNavy HR. SDIP Eligibility Chart, July 2025
6
Board for Correction of Naval Records. BCNR Decision NR20230009506
7
GovInfo. 37 U.S.C. § 373
8
Military Times. Other Pay
9
Department of Defense. DoD Financial Management Regulation, Volume 7A, Chapter 18
10
Office of the Law Revision Counsel. 37 U.S.C. § 352, Assignment Pay or Special Duty Pay