Description
Boat part number 1114337 is a new Mariner II locking seat swivel from Springfield Marine, part number 3100065-L . Commonly used on HCB Yachts, but may be used on other boats.
This swivel seat mount is constructed out of high-strength aluminum and fits 4″ posts per manufacturer. Features stainless steel pin, swivel clamps, and locks in 8 positions. Measures approximately 13 3/8″ L x 9″ W x 4 1/2″ H overall (15 3/8″ W with handle). Has a standard 5″ x 12″ mounting pattern.
Specifications:
- Boat Manufacturer: HCB Yachts
- Part Manufacturer: Springfield Marine
- Series: Mariner II
- Part Number: 3100065-L
- Material: Aluminum
- Color: Silver
- Post Fitment: 4″
- Overall Dimensions: 13 3/8″ L x 9″ W x 4 1/2″ H (15 3/8″ W with handle)
- Mounting Pattern: 5″ x 12″
![GROCO 1-1/4″ Bronze Electric Flanged Seacock – 12V [FBVE-1250 12V]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/groco-1-1-4-bronze-electric-flanged-seacock-12v-fbve-1250-12v.webp)
![Ocean Signal RescueME EDF1 Electronic Distress Flare – 7 Mile Range[750S-01710]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/ocean-signal-rescueme-edf1-electronic-distress-flare-7-mile-range-750s-01710.webp)
![Rapala Combo Pack – Pliers, Clipper, PunchSharpener [RTC-6PCHS]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/rapala-combo-pack-pliers-clipper-punchsharpener-rtc-6pchs.webp)
![Blue Sea 1455 4 Position Switch CLB Square[1455]](https://www.durablemarinebattery.com/wp-content/uploads/2026/08/blue-sea-1455-4-position-switch-clb-square-1455.webp)