Career & Promotion

Navy SRB MMN(SW)

FY27 Change 1

Rating cells from the FY27 Change 1 chart (N13 SRB 001/FY27), September 8, 2026 — multiple and ceiling for Zone A, B and C, next to FY26 Change 2.

Reviewed by Guilherme Correia, active-duty U.S. Air Force

The Navy FY27 Change 1 SRB plan (N13 SRB 001/FY27, September 8, 2026) lists the MMN(SW) rating (Machinist's Mate (Nuclear, Surface)) at Zone A 5.0× (cap $100,000), Zone B 8.0× (cap $120,000).

MMN(SW) — Machinist's Mate (Nuclear, Surface) · FY27 Change 1 award multiple by zone

Zone A · 17 months to 6 years of service

5.0×

cap $100,000

FY26: 5.0× · cap $100,000

Zone B · 6 to 10 years of service

8.0×

cap $120,000

FY26: 8.0× · cap $120,000

Zone C · 10 to 14 years of service

—

not listed

FY26: not listed

Run the multiple through the formula, the $30,000-per-year and $160,000 caps, and the payment schedule in the SRB calculator.

MMN(SW) SRB cells — every NEC and zone, FY27

Award multiple and ceiling per zone from the FY27 Change 1 chart (N13 SRB 001/FY27). “—” means the zone is not listed for that row; 0.0× means no SRB is payable in that zone. Where the chart changed a cell, the tag says how and the line under it gives the FY26 Change 2 figure.

Navy SRB MMN(SW) award multiples and ceilings by NEC and zone, FY27 Change 1
N25O/S5.0×cap $100,0008.0×cap $120,000—2, 6, 17

Source: MyNavy HR, Enlisted Career Administration (BUPERS-312) — 'Current SRB Award Levels' chart: SRB Eligibility Chart FY27_CH1.pdf, FY27 Change 1 dated September 8, 2026. Verify the live chart on MyNavy HR.

MMN(SW) on the FY26 Change 2 plan — for comparison

Every cell the previous plan (N13 SRB 002/FY26, dated December 10, 2025) listed for MMN(SW). Shown so the two plans can be read side by side.

Navy SRB MMN(SW) award multiples and ceilings by NEC and zone, FY26 Change 2
N25O/S5.0×cap $100,0008.0×cap $120,000—2, 6, 17

Source: MyNavy HR, Enlisted Career Administration (BUPERS-312) — 'Current SRB Award Levels' chart: SRB Eligibility Chart FY26CH2.pdf, FY26 Change 2 dated December 10, 2025.

How the MMN(SW) award is computed

The formula. SRB = monthly basic pay × years (and months) of additional obligated service × award multiple, not to exceed the award ceiling shown for that rating/NEC/zone, and not to exceed $30,000 per year of AOS.

The caps. BUPERS-312: in no case can an SRB exceed $160,000; federal policy limits SRBs to $30,000 per year of additional obligated service (AOS), with an exception raising Nuclear N33Z SRBs to $45,000 per year of AOS. NSIPS applies the cap automatically; SRBs over $100,000 require the CCC to use the AOS-limit override.

Zones. Zone A is 17 months to 6 years of service; Zone B is 6 to 10 years of service; Zone C is 10 to 14 years of service. Your zone is fixed by your total active service on the reenlistment date. Submission window: 35-120 days before the reenlistment date, via NSIPS/CIMS.

Chart version. Newly added skillsets and increases are effective immediately with the plan dated 8 Sep 2026. Reductions and eliminations are effective 8 Oct 2026; the last day to reenlist at the prior level is 7 Oct 2026. Values shown are the levels in effect from 8 Oct 2026. The full Navy SRB chart lists all 152 rows; the SRB calculator applies the multiple to your basic pay and years of obligated service, for either plan.

Chart notes that apply to MMN(SW)

  1. 2.Subsurface (SS) or surface (SW) designation indicates the component of the rating the Sailor can reasonably be expected to serve in; it does not require ESWS/SS qualification. Use the rating with the suffix/NEC shown when entering the precertification request.
  2. 6.Nuclear-trained Sailors: (a) zones 1-3 Sailors holding a nuclear supervisor NEC are compensated under the Enlisted Supervisor Retention Pay (ESRP) program, not SRB; (b) SRB for nuclear-trained Sailors who reenlist after applying for an officer program is held pending selection results.
  3. 17.For reenlistments over $100,000 the CCC must use the AOS-limit override on the NSIPS submission screen. Questions: mill_incen_pays.fct@navy.mil.

Other ratings with a payable SRB, FY27 Change 1

ABE · up to 1.0×ABH · up to 0.5×AC · up to 1.5×AG · up to 1.5×ALL NUCLEAR · up to 10.5×AM · up to 0.5×AO · up to 1.0×AWF · up to 1.5×AWO · up to 0.5×AWR · up to 2.5×AWS · up to 3.0×BM · up to 0.5×BU · up to 0.5×CB · up to 5.5×CM · up to 0.5×CS · up to 0.5×CSS · up to 2.0×CTI · up to 5.0×CTM · up to 3.0×CTR · up to 3.5×CTT · up to 3.5×CWT · up to 7.5×DC · up to 0.5×EA · up to 0.5×EM · up to 2.0×EMN(SS) · up to 8.0×EMN(SW) · up to 8.0×EN · up to 1.5×EO · up to 0.5×EOD · up to 7.0×ETN(SS) · up to 8.0×ETN(SW) · up to 8.0×ETV · up to 2.0×FC · up to 1.5×FCA · up to 3.5×FT · up to 1.5×GM · up to 1.0×GSE · up to 1.5×GSM · up to 1.5×HM · up to 5.5×Every rating and NEC

FAQ

MMN(SW) SRB — frequently asked questions

What is the MMN(SW) SRB multiple in FY27 Change 1?
Zone A 5.0× (cap $100,000), Zone B 8.0× (cap $120,000). Zone C is not listed for the MMN(SW) rating (Machinist's Mate (Nuclear, Surface)), which means no SRB is payable there. The table on this page shows every NEC row; where a rating has several rows, the multiple you receive is the one for the NEC you hold on the reenlistment date.
What changed for MMN(SW) from FY26 to FY27?
Nothing. Every zone level listed for the MMN(SW) rating (Machinist's Mate (Nuclear, Surface)) carries the same multiple and ceiling as the FY26 Change 2 plan (N13 SRB 002/FY26, dated December 10, 2025).
How is a Navy SRB calculated?
SRB = monthly basic pay × years (and months) of additional obligated service × award multiple, not to exceed the award ceiling shown for that rating/NEC/zone, and not to exceed $30,000 per year of AOS. BUPERS-312: in no case can an SRB exceed $160,000; federal policy limits SRBs to $30,000 per year of additional obligated service (AOS), with an exception raising Nuclear N33Z SRBs to $45,000 per year of AOS. NSIPS applies the cap automatically; SRBs over $100,000 require the CCC to use the AOS-limit override.
What do Zone A, B and C mean?
Zone A is 17 months to 6 years of service, Zone B is 6 to 10 years of service, Zone C is 10 to 14 years of service. Your zone is set by your total active service on the day you reenlist, and each zone has its own multiple and ceiling on the chart.
What is the MMN(SW) SRB award ceiling?
The highest ceiling listed for the MMN(SW) rating (Machinist's Mate (Nuclear, Surface)) is $120,000; the ceiling for each zone and NEC is in the table. The ceiling caps the total award, and federal policy separately limits SRBs to $30,000 per year of additional obligated service ($45,000 for nuclear) and $160,000 in total.
When did this chart take effect?
Newly added skillsets and increases are effective immediately with the plan dated 8 Sep 2026. Reductions and eliminations are effective 8 Oct 2026; the last day to reenlist at the prior level is 7 Oct 2026. Values shown are the levels in effect from 8 Oct 2026. This page is built from the FY27 Change 1 chart dated September 8, 2026 (N13 SRB 001/FY27); the Navy posts changes to that chart, so confirm the live chart with your Command Career Counselor before you sign.

Keep going

Next steps

SRB Calculator

Run your award through the formula, caps, and payment schedule

Full Navy SRB Chart

All 152 rating and NEC rows, FY27 beside FY26

Basic Pay Tables

The monthly basic pay the multiple is applied to

REF: 37 U.S.C. § 331 · OPNAVINST 1160.8 series, effective FY27 Change 1, September 8, 2026

MyNavy HR, Enlisted Career Administration (BUPERS-312) — 'Current SRB Award Levels' chart: SRB Eligibility Chart FY27_CH1.pdf (N13 SRB 001/FY27); FY26 Change 2 (N13 SRB 002/FY26) for comparison

Results are estimates. Always verify with your finance office.

Reviewed by Guilherme Correia · Military Toolkit editorial