please note: due to significant seasonal demand, order fulfilment and customer service response times are longer than normal.

for urgent orders or customer service requests, please email us with the subject line marked "Urgent".

Harken Big Boat End Controls

Big Boat end controls secure to track eliminating additional holes. Tough one-piece bases and cam arms are machined from a single piece of aluminum.

Ball bearing sheaves let cars adjust under load and release instantly. Compact, high-strength Carbo AirBlock® components keep traveler weight minimal. Cam-matic® cleats provide precise cleating.


  • Use 3171 to route control lines to the deck from a bridge-mounted traveler.

    High-Load Controls

    High-load controls allow 2:1 to 6:1 purchases on offshore boats with mainsails over 400 ft2 (37 m2). The 1893 and 1936 use multiple rows of ball bearings. The 3173 and 3174 feature 57 mm Black Magic® Big Boat ball/roller sheaves and high-load aluminum sideplates.

    ESP End Controls

    Use 6088 double-sheave ESP end controls for cabintop travelers where lines lead to the aft edge of the cabintop. Use the 6090 control block for a 3:1 purchase, the 1845 (see page 131) for a 4:1 purchase. Contact Harken® to order special length 3156 track with control mounting holes.
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