build a website

Sea Puffin

The Sea Puffin SES daughter craft is an air cushion catamaran designed to be launched and recovered by a standard davit from a mother ship. She uses an air cushion to offer operational wave height similar to larger Crew Transfer catamarans, and uses significantly less fuel oil during all operational phases.

The development and realization of first vessel has been supported by the Offshore Wind Accelerator, ENOVA, RFFAgder, Sørlandets Kompetansefond, Innovation Norway and Skattefunn. She was built in Denmark by Esbjerg Shipyard and went directly into demonstration charter for Vattenfall and Ørsted on Horns Rev 1 and Horns Rev 2.

Sea Puffin Configurations

Configuration PAXRangeSpeedTurbine AccessLaunch & Recovery
Daughter Craft9150 nm25 knt1.5 m15 t Davit
Daughter Craft12300 nm25 knt1.5 m17 t Davit
CTV12300 nm25 knt1.5 mnot relevant

Typical main specification:

Type of vessel: Surface Effect Ship Daughter Craft
Classification: BV | ✠ HULL ● MACH
Light Ship - Fast passenger vessel, Sea area 2
Hull material: Aluminium
Length: 15 m
Beam: 5.7 m
Draft: 1.4 m (off cushion)
0.5 m (on cushion)
Payload: 2 ton
Propulsion: Water jets
Main engines: 2 x 260 kW
Fuel consumption: 150 l/hour at 100% engine power
Cruising speed: 20-25 knots
Operational wave height for turbine access: 1.5-1.8 m significant wave height


ESNA is the inventor and designer of the Sea Puffin SES Daughter Craft. In addition to providing the design package, they have also supplied the air cushion systems to Sea Puffin 1. This includes the state-of-the-art ESNA air cushion motion damping systems. With this system the captain can govern the vessel's motions by an intuitive touch screen.

About ESNA
ESNA is an independent ship design company for high-performance vessels. We specialize on air cushioned catamaran/Surface Effect Ships (SES), where we have unique world-leading competence. Our strategy is to complement yards with design packages and the special air cushion systems and equipment, allowing any yard to build safe, cost efficient and reliable Surface Effect Ships.


WindPartner is the owner and operator of the world's first high-performance ESNA SES daughter craft, the Sea Puffin 1. She went into operation in July 2018, and has demonstrated both very low fuel consumption and unique high wave height for turbine access.
WindPartner and ESNA have a long-term cooperation agreement for the Sea Puffin, with the ambition to build a series of this vessel type over the next few years.

About WindPartner:
WindPartner AS is an independent service and package solutions provider to the offshore wind industry, with main business idea to build, own and operate new and right-performance DC/CTV by use of SES technology with optimum efficiency and workability compared to both existing standard DC’s and CTV’s. WindPartner has a flexible business model for the Sea Puffin, ranging from lease/time charter (preferred), purchase/sale and combinations of these.

Supported by: