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Product

MIL-DTL-24643/15–/18 shipboard cableMIL-DTL-24643/15, /16, /17 & /18LSDSGU / LSTSGU / LSMSCU / LSMSCS600/1000 V · Watertight · LSZH

LSDSGU / LSTSGU / LSFSGU / LS7SGU / LSMSCU / LSMSCS MIL-DTL-24643MIL-DTL-24643/15–/18 600/1000 V watertight low-smoke shipboard power & control cable

The core US Navy fixed shipboard power and control cable series built to MIL-DTL-24643/15 (LSDSGU 2C), /16 (LSTSGU 3C), /17 (LSFSGU 4C & LS7SGU 7C) and /18 (LSMSCU unshielded / LSMSCS shielded control) with water-blocked tinned copper, XLPO/silicone.

Water-resistant
Flame-retardant
EMC screen
Approved
Order designation
M24643/16-09UN (LSTSGU-100)
Outer Ø ≈
31.8 mm
Copper weight
1,545 kg/km
Total weight ≈
2,240 kg/km
Ampacity
172 A
All sizes (10)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Mil-Spec
M24643/15–/18
power (SGU) & control (MSCU/S)
Rated voltage
600 / 1000 V
SGU power · 600 V MSCU/S control
Watertight
WT (UN / AN)
blocked strands & core valleys
Fire safety
LSZH XLPO
IEEE 1202 flame · acid gas <0.5%
EMC option
LSMSCS Braided
tinned Cu overall EMC shield
Temp. rating
−30 to +105 °C
continuous conductor rating

Typical values for this cable type, based on MIL-DTL-24643/15, /16, /17 & /18 / IEEE 45 / MIL-STD-2042 — confirmed in the datasheet and quotation for your order.

Application fit

Is LSDSGU / LSTSGU / LSFSGU / LS7SGU / LSMSCU / LSMSCS right for your machine?

The primary non-flexing watertight low-smoke zero-halogen backbone power distribution (LSDSGU, LSTSGU, LSFSGU, LS7SGU) and multi-conductor control (LSMSCU, LSMSCS) cable family installed throughout US Navy destroyers, carriers, frigates and Coast Guard cutters.

Fixed installation

Suitable

Installed in shipboard cableways, hanger tiers and watertight bulkhead penetrations for 450 V / 600 V / 1000 V ship service.

Immersion & wet locations

Suitable

Longitudinal water-blocking in conductors and interstices prevents compartment-to-compartment flooding at rated hydrostatic head.

Offshore platform & shipboard deck trays

Suitable

Available unarmoured ('UN') or with braided aluminum armour ('AN') and overall tinned-copper EMC shield ('LSMSCS').

Energy chain / drag chain

Not suitable

Fixed shipboard cableway installation; for portable deck/shore cords specify LSDCOP / LSTCOP (M24643/3).

LSDCOP / LSTCOP Portable Cord
Typical machinesUS Navy & Allied Surface Warship Power Distribution450 V AC 60 Hz & 400 Hz Shipboard Switchboard FeedersMachinery Control, Damage Control & Valve ActuatorsCoast Guard Cutters & Naval Auxiliary Vessels

Construction

Layer by layer

Shown: M24643/16-09UN (LSTSGU-100, 3×1/0 AWG) 600/1000 V watertight shipboard power feeder with water-blocked concentric tinned copper conductors, cross-linked polyolefin (XLPO) insulation, water-blocking fillers, binder tape and black cross-linked LSZH XLPO outer jacket.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Water-blocked concentric stranded tinned copperASTM B33 / MIL-DTL-24643 stranded tinned copper (#16 AWG to 400 kcmil) filled withPrevents water migration down the conductor strands through bulkhead penetrations
2Cross-linked polyolefin (XLPO) primary dielectric105 °C low-smoke zero-halogen cross-linked polyolefin with colour/number identificationHigh dielectric margin and zero halogen acid gas under fire conditions
3Watertight elastomeric fillers & binder tapeNon-hygroscopic water-swelling/elastomeric core fillers + polyester binder wrapGuarantees circular geometry and longitudinal watertightness
4Optional overall tinned copper braid shield (LSMSCS)85–90 % optical coverage tinned copper EMC braid on LSMSCS; optional braided aluminumProvides shipboard EMI/EMC attenuation per MIL-STD-461
5Cross-linked LSZH polyolefin outer jacketHeavy-duty thermoset low-smoke zero-halogen XLPO jacket (Black)Passes IEEE 1202 vertical tray flame, smoke density and toxicity requirements

LSDSGU (2C · /15), LSTSGU (3C · /16), LSFSGU (4C · /17) & LS7SGU (7C)

Watertight Shipboard General Use power feeders from #14 AWG to 400 kcmil (UN unarmoured or AN armoured)

LSMSCU (Unshielded · /18) & LSMSCS (Shielded · /18)

Multi-conductor Shipboard Control (2 to 44 cores of 16 AWG or 14 AWG) with optional overall Cu braid shield

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MIL-DTL-24643/15, /16, /17 & /18 / IEEE 45 / MIL-STD-2042. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated operating voltage
600 V / 1,000 V (LSDSGU, LSTSGU, LSFSGU, LS7SGU) · 600 V (LSMSCU / LSMSCS)
Factory AC dielectric withstand test
2.5 to 3.5 kV AC rms for 5 minutes + IR ≥ 1,000 MΩ·1000 ft
Surface transfer impedance (LSMSCS)
Optimized tinned-copper braid shield for below-deck EMC compliance

Thermal

Conductor temperature rating
−30 °C to +105 °C continuous · +250 °C short-circuit
Thermal cycling & overload stability
Verified thermal ageing and short-circuit withstand per standard

Mechanical

Longitudinal watertightness (WT)
Passes MIL-DTL-24643 open-end hydrostatic water-penetration test
Minimum bending radius
6 × OD (unarmoured UN) · 8 × OD (shielded LSMSCS / armoured AN)

Resistance

Flame, smoke & toxicity
IEEE 1202 vertical flame pass · Halogen < 0.2 % · Acid gas < 5 mg/g
Environmental & chemical durability
Resistant to moisture, industrial fluids and service ageing

Reference standards

Governing military slash sheets
MIL-DTL-24643/15 (LSDSGU), /16 (LSTSGU), /17 (LSFSGU) & /18 (LSMSCU/LSMSCS)
Factory QA & material compliance
EN 10204 3.1 routine test certificate · RoHS 2 & REACH compliant

Identification

Military PIN suffix
'UN' = Unarmoured · 'AN' = Braided Aluminum Armour · 'S' = Overall Shield
Customs tariff (HS)
8544.49

Sizes

10 representative MIL-DTL-24643/15–/18 shipboard power & control sizes

Watertight 2C/3C/4C power feeders (LSDSGU, LSTSGU, LSFSGU) and multi-core control cables (LSMSCU, LSMSCS).

Military PIN, configuration, outer diameter & ampacity
Military PIN / TypeConfigurationRatingOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Ampacity
A		Min. bend R
mm		Enquiry
LSDSGU (/15), LSTSGU (/16) & LSFSGU (/17) Watertight Shipboard Power Feeders
M24643/15-03UN (LSDSGU-9)2×10 AWG (5.26 mm²)600/1000 V13.81022354383
M24643/15-08UN (LSDSGU-50)2×3 AWG (26.7 mm²)600/1000 V22.8515980118137
M24643/16-03UN (LSTSGU-9)3×10 AWG (5.26 mm²)600/1000 V14.81533053689
M24643/16-05UN (LSTSGU-23)3×6 AWG (13.3 mm²)600/1000 V19.438564068116
M24643/16-09UN (LSTSGU-100)3×1/0 AWG (53.5 mm²)600/1000 V31.81,5452,240172191
M24643/16-12UN (LSTSGU-200)3×4/0 AWG (107 mm²)600/1000 V41.23,0904,180260247
M24643/17-05UN (LSFSGU-23)4×6 AWG (13.3 mm²)600/1000 V21.551383058129
LSMSCU & LSMSCS (/18) Watertight Multi-Core Shipboard Control Cables
M24643/18-02UN (LSMSCU-7)7×16 AWG (1.31 mm²) Unshielded600 V12.6882151276
M24643/18-05UN (LSMSCU-19)19×16 AWG (1.31 mm²) Unshielded600 V18.52394909111
M24643/18-14UN (LSMSCS-12)12×16 AWG (1.31 mm²) Shielded600 V16.818541010101
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Full QPL-equivalent dimensional range covers #14 AWG through 400 kcmil (power) and 2 through 44 conductors (control).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
MIL-DTL-24643 AC dielectric withstand, IR & watertightness testZero breakdown; longitudinal water flow within NAVSEA M24643 limitEvery production reel
Sample tests
IEEE 1202 vertical flame, smoke density, acid gas & cold bend testPasses NAVSEA low-smoke zero-halogen shipboard fire qualificationLot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

MIL-DTL-24643/15, /16, /17 & /18 CompliantWatertight (WT) & Low-Smoke Zero-Halogen (LSZH)MIL-STD-2042 & IEEE 45 Marine Practice

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX M24643/<slash>-<PIN> LSDSGU/LSTSGU/LSMSCU <size> WT LSZH
Delivery form
Non-returnable fumigated wooden or steel drums
Standard lengths
250 m · 500 m · 1000 m standard drums
MOQ
250 m (stock sizes) · 500 m (custom)
Lead time
3–5 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFLSDSGU / LSTSGU / LSFSGU / LS7SGU / LSMSCU / LSMSCS MIL-DTL-24643 – technical datasheet10 sizes · construction, technical data, approvalsXLSXLSDSGU / LSTSGU / LSFSGU / LS7SGU / LSMSCU / LSMSCS spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

How do you decode LSDSGU, LSTSGU, LSFSGU, LS7SGU, LSMSCU and LSMSCS?
All start with 'LS' for Low-Smoke zero-halogen. In the power series ('SGU' = Shipboard General Use, watertight non-flexing): 'D' = 2 cores, 'T' = 3 cores, 'F' = 4 cores, and '7' = 7 cores. In the control series ('MSC' = Multi-conductor Shipboard Control): 'U' = Unshielded (LSMSCU) and 'S' = Overall braided EMC Shield (LSMSCS).
What is the difference between LSTSGU (M24643/16) and LSTriSGU / LSTSGA?
LSTSGU is the non-circuit-integrity general-use cross-linked polyolefin (XLPO) watertight power feeder for general shipboard distribution. Where 3-hour fire survival (Circuit Integrity) is required for vital battle-short circuits, MIL-DTL-24643 specifies silicone-glass-insulated counterparts.
What do the 'UN' and 'AN' suffixes mean on MIL-DTL-24643 part numbers?
'UN' denotes an Unarmoured outer jacket, which is standard for modern US Navy shipboard installations to save topside weight. 'AN' adds a braided aluminum wire armour over the outer jacket for exposed mechanical hazard zones.
What factory routine tests and certificates are supplied with LSDSGU / LSTSGU / LSFSGU / LS7SGU / LSMSCU / LSMSCS?
Every production drum of LSDSGU / LSTSGU / LSFSGU / LS7SGU / LSMSCU / LSMSCS undergoes 100 % conductor DC resistance measurement at 20 °C, high-voltage AC/DC dielectric withstand testing, and dimensional verification per MIL-DTL-24643/15, /16, /17 & /18 / IEEE 45 / MIL-STD-2042, supplied with an EN 10204 3.1 inspection certificate.

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