Two Sisters

A versatile, mid-size dive support vessel built for endurance, precision, and performance in a wide range of marine environments.

Reliable Support for Dive and ROV Operations

The Two Sisters is a 56-foot dive support vessel in the Pacific Northwest, designed for efficient deployment across a variety of inshore and nearshore diving missions. Outfitted with a double lock decompression chamber, surface-supplied dive stations, and HD video recording systems, she delivers safe and effective support for complex underwater tasks. Her onboard air systems include high- and low-pressure banks to accommodate extended operations, while an integrated Deep Trekker ROV enhances inspection and documentation capabilities. Compact yet well-equipped, Two Sisters features comfortable crew accommodations, full galley amenities, and durable mechanical systems—making her a dependable platform for survey, inspection, or light construction tasks in coastal environments.

Vessel Specifications & Onboard Capabilities

Dimensions

Length: 56′
Beam: 17.1′
Draft: 8.1′

Capacities

Fuel: 5,000 Gal
Fresh Water: 500 GAL

Regulatory

Gross Tonnage: 52 GRT
Net Tons: 37 NRT

Machinery

Engine: 3408 CAT Diesel
Reduction Gear: 514 Omega
Prop Make: 5838 -3 Blade
Generators: One John Deere Powertec 6 Cylinder 70kw, One Kubota 22kw
Shore Power: 100amp Three Phase

Capabilities

Standard Double Lock Decompression Chamber
580′ Surface Supplied Diver Umbilical w/ HD Underwater Video Record
620′ Standby Surface Supplied Diver Umbilical
Poseidon Air Systems PFU-320 High Pressure'”Breathing Air Compresor
Ten ‘K’ Bottle (3200psi) High Pressure Breathing Air Bank
Two Oμincey QR-25 346 Low Pressμre Breathing Air Bank
Deep Trekker DTG3 ROV
Miller Welder with 500

Living Quarters

Captins Quaters
FourPeak Crew Quaters Sleeping four
Full Galley with Stove, Refrigerator, and Microwave
Full Head with Shower
One Frozen Storage Chest Freezer