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Boat Accessories and Supplies

Boat Accessories and Supplies

  • Sea-Dog Line Anchor Shackle 5/16 Glv Rated 147608

    Sea-Dog Line Anchor Shackle 5/16 Glv Rated 147608

    SEA-DOG LINE

    $6.27
    Sea-Dog Line Anchor Shackle 5/16 Glv Rated 147608 With their rounded shape, Screw Pin Anchor Bow Shackles are designed for many different applications. Features a screw pin closure for quick removal, making them ideal for rigging applications where fast...
    Part Number:
    354-147608
    Availability:
    In Stock - Ships same or next business day.
    A:
    3/8"
    B:
    1/2"
    C:
    13/16"
    D:
    1-3/16"
    WLL:
    3/4
    Pkg.:
    Bulk
    $6.27
  • Sold Out, please call for ETA.
    Sea-Dog Line Anchorline Double Gld 1/2X15 1/Pk 302112150G/W-1

    Sea-Dog Line Anchorline Double Gld 1/2X15 1/Pk 302112150G/W-1

    SEA-DOG LINE

    $180.00 $150.67
    Sea-Dog Line Anchorline Double Gld 1/2X15 1/Pk 302112150G/W-1100% premium double braided nylon anchor lines have excellent flexibility and stretch to absorb shock with a soft feel.Stainless steel thimbleProfessionally splicedYacht whipped at thimble...
    Part Number:
    354-302112150GW1
    Availability:
    In Stock - Ships same or next business day.
    Color:
    Gold/White
    Size:
    1/2" × 150'
  • Sea-Dog Line Anchorline Poly 1/4X50'Yel1/Pk 304206050Yw-1

    Sea-Dog Line Anchorline Poly 1/4X50'Yel1/Pk 304206050Yw-1

    SEA-DOG LINE

    $16.91
    Sea-Dog Line Anchorline Poly 1/4X50'Yel1/Pk 304206050Yw-1 Hollow Braid Anchor Line with Snap 100% premium multi-filament polypropylene floating rope Plated steel Spring Hook (155630) Packaged in a reusable clamshell pack (304206050YW-1 and...
    Part Number:
    354-304206050YW1
    Availability:
    In Stock - Ships same or next business day.
    Color:
    Yellow
    A (Dia.):
    1/4"
    B (Length):
    50'
    WLL-kgs/lbs:
    104/230
    B.S.-kgs/lbs:
    520/1050
    $16.91
  • Sea-Dog Line Battery Box Strap & Brackets 415092-1

    Sea-Dog Line Battery Box Strap & Brackets 415092-1

    SEA-DOG LINE

    $7.55
    Sea-Dog Line Battery Box Strap & Brackets 415092-1 Battery Box Strap & Brackets includes a woven polypropylene strap, injection molded nylon buckle, two brackets, and four #8 FH fasteners.  
    Part Number:
    354-4150921
    Availability:
    In Stock - Ships same or next business day.
    A:
    38"
    B:
    1-9/16"
    C:
    1"
    D:
    2-5/16"
    $7.55
  • Sea-Dog Line Battery Terminal Cover 415111

    Sea-Dog Line Battery Terminal Cover 415111

    SEA-DOG LINE

    $3.55
    Sea-Dog Line Battery Terminal Cover 415111 These Battery Terminal Covers are designed to insulate integral marine wing nut terminals protecting battery cables from corrosion and shorting. These covers satisfy USCG and ABYC requirements for the prevention...
    Part Number:
    354-415111
    Availability:
    In Stock - Ships same or next business day.
    Cable Size:
    36983
    A:
    1/2"
    B:
    1-5/8"
    C:
    1-11/16"
    D:
    2-7/8"
    Color:
    Red
    $3.55
  • Sea-Dog Line Battery Terminal Covers 415115-1

    Sea-Dog Line Battery Terminal Covers 415115-1

    SEA-DOG LINE

    $11.05
    Sea-Dog Line Battery Terminal Covers 415115-1 These Battery Terminal Covers are designed to insulate integral marine wing nut terminals protecting battery cables from corrosion and shorting. These covers satisfy USCG and ABYC requirements for the...
    Part Number:
    354-4151151
    Availability:
    In Stock - Ships same or next business day.
    Cable Guage:
    1/0, 2/0
    A:
    5/8"
    B:
    1-5/8"
    C:
    1-11/16"
    D:
    2-7/8"
    Color:
    Black/Red
    $11.05
  • Sea-Dog Line Battery Terminal Wing Nut Style 415210-1

    Sea-Dog Line Battery Terminal Wing Nut Style 415210-1

    SEA-DOG LINE

    $14.70 $13.68
    Sea-Dog Line Battery Terminal Wing Nut Style 415210-1 These Wing Nut Style Battery Terminals convert battery posts to stud connectors and permit quick disconnection from the battery. Polarity specific to meet USCG regulations. Constructed of die cast...
    Part Number:
    354-4152101
    Availability:
    In Stock - Ships same or next business day.
    A:
    2-5/16"
    B:
    9/16"
    C:
    5/16"
    D:
    5/16"
    Description:
    Positive/Negative Set
    $14.70 $13.68
  • Sea-Dog Line Boat Hook / Paddle Clip 491361-1

    Sea-Dog Line Boat Hook / Paddle Clip 491361-1

    SEA-DOG LINE

    $10.45 $9.98
    Sea-Dog Line Boat Hook / Paddle Clip 491361-1One piece boat hook/paddle clip allows for the simple one handed storage of your boat hook or paddle, anti-snag ramps prevent line getting stuck under the clip when not in use, and leash attachment points for...
    Part Number:
    354-4913611
    Availability:
    In Stock - Ships same or next business day.
    Size:
    1-1/8" × 4"
    Fastener:
    1/4" RH
    $10.45 $9.98
  • Sea-Dog Line Boat Hook Kepper Plate Only 491056-1

    Sea-Dog Line Boat Hook Kepper Plate Only 491056-1

    SEA-DOG LINE

    $9.95 $8.81
    Sea-Dog Line Boat Hook Kepper Plate Only 491056-1 The Boat Hook Mooring Buoy Snap Kit is the convenient and easy solution for attaching a mooring line to a buoy or cleat. Using the included keeper plate, these channeled snaps fit onto the end of boat...
    Part Number:
    354-4910561
    Availability:
    In Stock - Ships same or next business day.
    Description:
    Boat Hook Keeper Plate Only
    Fastener:
    #8 FH
    $9.95 $8.81
  • Sea-Dog Line Bow Shackle SS 1/4 147056

    Sea-Dog Line Bow Shackle SS 1/4 147056

    SEA-DOG LINE

    $3.86
    Sea-Dog Line Bow Shackle SS 1/4 147056 With their rounded shape, Bow Shackles are designed for many different applications. Features a screw pin closure for quick removal, making them ideal for rigging applications where fast and/or repeated connecting...
    Part Number:
    354-147056
    Availability:
    In Stock - Ships same or next business day.
    A:
    1/4"
    B:
    1/2"
    C:
    13/16"
    D:
    1-1/16"
    Pkg.:
    Bulk
    $3.86
  • Sea-Dog Line Bow Shackle SS 3/8 147060

    Sea-Dog Line Bow Shackle SS 3/8 147060

    SEA-DOG LINE

    $10.00 $8.25
    Sea-Dog Line Bow Shackle SS 3/8 147060 With their rounded shape, Bow Shackles are designed for many different applications. Features a screw pin closure for quick removal, making them ideal for rigging applications where fast and/or repeated connecting...
    Part Number:
    354-147060
    Availability:
    In Stock - Ships same or next business day.
    A:
    3/8"
    B:
    7/8"
    C:
    1-7/16"
    D:
    1-3/4"
    Pkg.:
    Bulk
    $10.00 $8.25
  • Sea-Dog Line Bow Shackle SS 5/16 147058

    Sea-Dog Line Bow Shackle SS 5/16 147058

    SEA-DOG LINE

    $6.75 $6.20
    Sea-Dog Line Bow Shackle SS 5/16 147058 With their rounded shape, Bow Shackles are designed for many different applications. Features a screw pin closure for quick removal, making them ideal for rigging applications where fast and/or repeated connecting...
    Part Number:
    354-147058
    Availability:
    In Stock - Ships same or next business day.
    A:
    5/16"
    B:
    11/16"
    C:
    1-1/8"
    D:
    1-7/16"
    Pkg.:
    Bulk
    $6.75 $6.20
  • Sea-Dog Line Brass Three Position 420400-1

    Sea-Dog Line Brass Three Position 420400-1

    SEA-DOG LINE

    $26.95 $19.40
    Sea-Dog Line Brass Three Position 420400-1Stamped brass. When pushed in all the way, the switch is turned off. When pulled to the first stop, the first circuit is activated. At the second stop the first circuit is deactivated and the second circuit is...
    Part Number:
    354-4204001
    Availability:
    In Stock - Ships same or next business day.
    Terminals:
    4 Screw
    Shaft:
    3/8" x 1"
    $26.95 $19.40

Shop the Best Boat Accessories Online

Whether you're prepping for a weekend on the water or upgrading your gear, PowerBoatSupply.com has all the boat accessories you need. From electrical components and drink holders to safety gear and dock lines, our wide selection of boat accessories ensures you're ready for anything out on the water.

We carry trusted brands like Sea-Dog Line, Seachoice, Attwood Marine, and more — offering both essential and specialized boat accessories for every type of boater. Not sure which part is right for your setup? Our team is here to help you choose the best boat accessories for your vessel and your adventures.

Browse our best-selling items below and get fast shipping, great prices, and top-rated customer service from PowerBoatSupply.com — your source for quality marine parts and accessories since 1987.